The Siux Electra ST4 Pro 2025 is the official racket of professional player Franco Stupaczuk and is designed for advanced players who want to balance explosive power with precise control. With its hybrid teardrop shape and medium-high balance, this racket performs in both attack and defense.
First impression and design
The Electra ST4 Pro has a premium and aggressive design. It looks modern and powerful, with a matte finish and a sandy texture on the surface that promises extra grip and spin. Its frame is built for stability and durability, making it ideal for high-level matches.
Technical specifications
Shape: Teardrop
Weight: 355 to 375 grams
Balance: Medium-high
Frame: 100% carbon
Face: 15K carbon
Core: EVA Soft
Surface: Rough (sandy texture)
Player level: Advanced to professional
Type: All-round power and control
On-court performance
Power and control
The 15K carbon face offers a medium-hard response, giving you extra punch in offensive shots without losing control. Whether you’re smashing or playing aggressive volleys, the structure helps you maintain precision under pressure.
Spin and shot variation
The sandy-textured surface enhances grip on the ball, letting you generate topspin and slice with confidence. This is especially useful during tactical play, quick exchanges, and angled shots.
Comfort and response
The EVA Soft core provides shock absorption and a comfortable feel, even during high-impact play. It helps reduce strain on the arm and improves consistency in defensive shots.
Stability and durability
The 100% carbon frame reinforces the structure, offering high stability even during powerful swings. It is built to handle intense play while delivering consistent performance.
Pros and cons
Pros
Excellent mix of power and control
Great for both attacking and defensive play
Spin-enhancing surface
Comfortable impact feel
Endorsed by Franco Stupaczuk
Cons
Less forgiving for beginners
Demands solid technique to maximize benefits
Conclusion
The Siux Electra ST4 Pro 2025 is ideal for all-round players with a competitive mindset. If you want one racket that lets you dictate pace, add spin, and finish points with authority, this model is a high-level choice.
As the leading Experience Center Specialist at PadelShop.com, Jorn lives and breathes padel. Day in and day out, he works directly with players of all levels on our courts, helping them demystify racket specs, balance points, and core materials through real, hands-on testing.
Jorn doesn’t believe in marketing fluff. His articles and gear reviews are built strictly on raw technical data, rigorous on-court testing, and genuine player feedback. Whether you are seeking ultimate control or explosive power, his deep technical insights ensure you find your perfect teammate on the court.
MEASURED RACKET REVIEW
NOX AT10 Luxury Genius 18K Alum 2026 review.
AgustÃn Tapia's signature racket, re-released for the 2026 season. We measured it on our equipment and lay out all its characteristics so you can decide whether this racket fits your game.
Measured with professional testing equipment
PadelShop test team
The NOX AT10 Luxury Genius 18K Alum 2026 is the flagship racket of Spanish brand NOX and the racket that AgustÃn Tapia uses to compete at the highest level of world padel. For the 2026 season, NOX has substantially upgraded the design: a new mould, an adjustable weight system with swappable inserts, a new surface texture for more spin, photochromic paint and the signature 18K aluminium-carbon. A racket designed for advanced players looking for a versatile all-rounder.
Many reviewers write about rackets based on a few hours of play, or simply copy the manufacturer's specs onto their own website. We do things differently. Every racket we review goes onto our measuring machine first. Hardness, swingweight and weight are objective properties that can actually be measured, and they say more about how a racket plays than any marketing copy. In this review we walk you through what we measured and what it means on the court.
About this measurement: we measured this specific racket on our testing equipment at the PadelShop Padel Experience Center. Padel rackets can vary by a few percent in weight and hardness within the same production line. The values shown here are representative of the model, but individual units may differ slightly.
OUR MEASUREMENTS
The core characteristics at a glance
Five properties that together define the character of the racket.
Hardness
64/ 75
50 extremely soft
62 soft
75 extremely hard
Hard. At 64, this racket falls just into the hard segment of our scale, at the softer end of hard. On the court you feel a racket that responds quickly to a clean strike, while still being soft enough that mistimed hits don't punish you brutally.
Our hardness scale
50 - 54extremely soft
55 - 60very soft
61 - 63soft
64 - 66hard
67 - 70very hard
70 +extremely hard
Swingweight
157/ 185
140 weight near hand
162 neutral
185 weight in head
The weight sits closer to your hand. On the court you feel a racket that turns and points quickly. A higher swingweight would give you more punch on the smash, but this racket chooses speed and manoeuvrability instead.
Weight
367grams
340g light
362g average
385g heavy
Average. The unit we measured weighs 367 grams and sits within the manufacturer's stated range of 360 to 375 grams. A racket in the standard playing range for men.
Balance
Neutralcentre
weight near hand
neutral
weight in head
Neutral. The centre of gravity sits roughly in the middle of the racket. With the adjustable weight system, you can shift this further toward the head or the hand depending on what your game needs.
Sweet spot
Generouscentral
small/targeted
average
generous/forgiving
Generous, centred on the face. On the court you feel a forgiving zone: shots that don't land perfectly still deliver decent contact and a clean return.
The sweet spot is a qualitative assessment based on the shape and the measured hardness, not a separate measurement from the machine.
Shape: a note on classification
NOX classifies this racket as a teardrop. Most webshops and reviewers adopt that classification. We come to a different conclusion.
When you physically hold this racket and look at the actual shape of the face, you see that the centre of gravity sits much closer to the neutral position than a true teardrop. The face is wider and shorter than the manufacturer photos suggest. We therefore classify the AT10 Luxury Genius 18K Alum 2026 as a round racket. This isn't criticism of NOX, it's simply what we see when we assess the racket ourselves.
Why this matters: shape determines where the sweet spot sits and how the racket reacts to off-centre shots. A round shape typically produces a more generous, forgiving sweet spot in the middle of the face. A teardrop or diamond shape shifts the sweet spot higher into the head, favouring power at the cost of forgiveness. If you expect this racket to play like a teardrop, you might be surprised at how much more forgiving it actually feels.
The technologies behind the racket
NOX has substantially upgraded this racket for 2026. Four technologies actually shape how it plays. The rest is largely cosmetic.
18K Alum carbon surface
An aluminium-coated 18K carbon layer on the hitting face. The aluminium coating provides a more consistent response in changing temperatures, summer and winter alike. The 18K weave is intentionally looser than the 12K NOX uses on its attacking models. It deforms slightly more under the ball, gives longer contact time, and therefore produces a softer, more comfortable hit feel. This explains why the hardness of 64 sits at the softer end of the hard segment rather than clearly in the middle or upper part.
MLD Black EVA core
A layered core with different rubber densities stacked on top of each other. In practice this means the ball response adapts to the hardness of your strike. On defensive shots you engage the softer layers, on smashes and attacking shots the harder layers. This gives the racket a scalable character: comfortable where you want it, powerful where you need it.
Adjustable weight system
New for 2026 and the most practical upgrade. With swappable inserts of 2 and 4 grams in the handle, you can adjust the balance of the racket without any tools. For net players this means a lighter-feeling racket with faster reactions. For attackers, extra weight in the head for the smash. It actually shifts the measured balance, and therefore the playing feel.
Dual surface structure for spin
A combination of 3D relief and a fine sand finish across the entire face. On older AT10 models, the sand texture was limited to the edges and the 3D relief to the centre. For 2026, both are applied across the whole face. This produces more consistent spin regardless of where you hit the ball. Important for players whose game relies on top or back spin.
The racket also includes a number of smaller features that NOX lists on the product page but which are less defining in practice:
Aerodynamic perforations: side openings that reduce air resistance during the swing.
Vibration dampeners: rubber inserts in the frame that reduce shock to wrist and elbow.
Photochromic paint: the colour of the face changes with light exposure. Aesthetic detail, no influence on play.
Quick-swap wrist strap.
Extended handle with patented grip coating: 30 mm longer handle for players who use a two-handed backhand.
What the numbers mean on the court
Hardness 64: hard, at the softer end
On our scale from 50 (extremely soft) to 75+ (extremely hard), the AT10 Luxury Genius 18K Alum 2026 comes in at 64. That places it right at the border between soft and hard. Not extremely hard, but at the start of the hard segment. On the court you feel that the ball doesn't sink deep into the surface, while the racket still gives enough comfort that mistimed hits don't punish you brutally.
Players coming from softer rackets will notice the ball leaving the surface more quickly. Those stepping down from extremely hard rackets (67+) will feel more absorption and therefore less load on the wrist and elbow.
The hardness measurement in our Padel Experience Center in Alphen aan den Rijn.
Swingweight 157: weight closer to your hand
The swingweight of 157 on our scale tells you something specific. Not how "heavy" the racket is, but where the weight sits. On this racket, the weight sits relatively close to your hand, and less in the head. This has direct consequences for how the racket feels on the court.
You feel a racket that swings quickly. It turns easily in your hand, gets into position fast, and short reactions at the net or in defence happen effortlessly. At the same time, you give up some pure smash power. On a racket with more weight in the head, you get more punch on attacking shots. Not a quality difference, just a different choice by the manufacturer. Attacking players benefit from a higher swingweight, control players and all-rounders from a lower one.
Both weight itself and weight distribution play a role in wrist and elbow injuries. A heavy racket (above 375 grams) puts more load on the wrist regardless of where the weight sits. A racket with much weight in the head also amplifies leverage during the swing, further increasing load on wrist and elbow. The combination of average weight and swingweight on this racket therefore makes it a safe choice for players who have suffered from padel elbow or wrist issues.
The swingweight measurement: 157 on our scale.
Weight 367 grams
The unit we measured weighs 367 grams and sits squarely in the middle of the manufacturer's range (360-375 grams). No extreme outlier, a racket in the standard playing range for men. On the court you feel a racket that is light enough to handle smoothly through an entire match, but heavy enough to carry through on attacking shots.
Rackets within the same series can differ by 5 to 10 grams from one unit to another. A 363-gram unit plays noticeably differently from a 372-gram one, even though both are labelled "AT10 Luxury Genius 18K Alum 2026" on the box. This isn't a factory defect, it's a natural result of the production process. In our shop you can always have the exact weight of your chosen racket checked beforehand.
Balance and sweet spot
The balance sits roughly in the middle of the racket, a neutral starting point. With the adjustable weight system you can shift this yourself. Add the inserts to the head and you get a racket with more punch on the smash. Place them closer to the handle and the racket turns even faster for net play.
The sweet spot is generous and centrally positioned. On the court you feel that shots which don't land perfectly in the heart of the face still deliver decent contact. This makes the racket more accessible than one with a small, targeted sweet spot high in the head.
The specs at a glance
Property
Stated by NOX
Our measurement
Weight
360-375 g
367 g
Hardness
Medium touch
64 (hard)
Swingweight
Not stated
157
Balance
Neutral
Neutral/centre
Shape
Teardrop
Round
Playing feel according to the numbers
The combination of hardness 64, swingweight 157, weight around 367 grams and a neutral balance paints a clear profile. This is a racket for the player who values control and manoeuvrability as much as power. A serious tool for those who draw part of their power from technique, not just from the equipment.
On the smash
The racket delivers enough power for effective smashes, but you feel that NOX did not aim for maximum knockout strength. Because the weight sits closer to your hand than in the head, you get less natural punch than from an attack racket. What you get instead is more speed in your swing, a big advantage when you play many different shots in succession. This racket rewards technique.
At the net
This is where the racket truly shines. The lower swingweight delivers lightning-fast reactions. Short, controlled volleys come effortlessly, and you can position the racket quickly for the next shot. The 18K carbon and aerodynamic perforations do their job here.
In defence
The layered MLD Black EVA core absorbs hard attacking balls better than a uniform hard core. Defensive shots get longer contact time, which gives you better control over where the ball goes. Combine that with the manoeuvrability and you have a racket that lets you recover from difficult positions.
For spin
The dual surface delivers on its promise. Topspin and backspin grip consistently, not only in the centre of the face but also toward the edges. For players who build their game around spin, a noticeable improvement over the 2025 version.
A racket that chooses speed and control over brute force. Quick in the hand, comfortable on the ball.
Who it's for, and who it isn't
Recommended for
Players who play at least 2 to 3 times a week at an advanced level
All-round players who value control and manoeuvrability as much as power
Players who draw part of their power from technique, not just from the racket
Those who play a lot at the net and need quick volleys
Players with a sensitive wrist or elbow who want to avoid extremely hard rackets without going too soft
Those who want to experiment with balance adjustment via the adjustable weight system
Ambitious beginners: the generous sweet spot and all-round character make this racket more accessible than many other top models, provided you're willing to grow into it
Not the right choice for
Recreational players who play once a week (the price-to-use ratio doesn't add up)
Pure attacking players who want maximum smash power (consider the Attack version or 12K Xtreme)
Players looking for a racket with much weight in the head for maximum punch
Those who genuinely want a teardrop shape for power-oriented play
How to keep this racket in top condition
A padel racket of this calibre lasts a long time, provided you treat it well. A few practical tips:
Do not leave it in the car during summer. EVA foam permanently softens above 50 degrees Celsius, even when the racket isn't being used. A racket that sits for an hour in a hot car can irreversibly lose power.
Do not store in freezing temperatures. EVA becomes brittle below about 5 degrees and prone to cracking. Store the racket at room temperature, ideally between 15 and 25 degrees.
Clean with a damp cloth. Avoid aggressive cleaners or solvents, as they damage the surface coating and reduce its spin properties.
Replace your overgrip in time. A worn overgrip forces you to grip harder, which increases wrist load and can cause injuries over time. A new overgrip costs a few euros and makes an immediate difference.
Use a padel bag with a thermal compartment when transporting your racket. A thermal compartment is insulated, keeping the temperature inside stable even when you walk from court to car on a hot summer day or wait outside in winter. This protects the EVA foam from temperature shocks that affect the racket's properties.
Conclusion
The NOX AT10 Luxury Genius 18K Alum 2026 is a versatile all-round racket for advanced players and ambitious beginners. The hardness of 64 sits at the softer end of the hard segment, which delivers a pleasant balance between comfort and feedback. The lower swingweight of 157 makes the racket fast and manoeuvrable, at the cost of some punch on attacking shots. The technology is thoughtful, and the adjustable weight system is a targeted 2026 upgrade that genuinely lets you tune what the racket does for you.
The key consideration for you: does this profile suit your game? If you play primarily on attack and want to maximise every smash, a racket with more weight in the head will serve you better. If you play a versatile style focused on control, net play and defence, this racket suits you well.
Want to feel this racket for yourself? At PadelShop in Alphen aan den Rijn you can test the AT10 Luxury Genius 18K Alum 2026 on court for 29.95 euros. If you like it, we deduct the test fee from the purchase price. Browse the NOX AT10 Luxury Genius 18K Alum 2026 on our webshop.
Frequently asked questions
Is the NOX AT10 Luxury Genius 18K Alum 2026 suitable for beginners?
For recreational beginners playing once a week, this racket is too ambitious both in price and in technical demand. For beginning players with serious ambition, it can be a strong choice: the generous sweet spot and all-round character make it more accessible than many other top models. Not sure? Book a racket test or come in for advice at the shop.
What's the difference between the 18K Alum and the 12K Alum Xtreme?
Both rackets share the platform and technology but differ in character. The 18K Alum is softer, more comfortable and more versatile, suited to control players. The 12K Alum Xtreme is stiffer, more direct and more powerful, designed for offensive players. Choose the 18K for balance, the 12K for pure power.
What does a hardness of 64 mean in practice?
On our scale, 64 falls into the hard segment (64-66), but right at the transition from soft to hard. The racket gives enough response to return a good shot directly, but doesn't punish mistimed hits harshly. Suited to players who want both comfort and feedback without going to the extremes.
What does a swingweight of 157 mean in practice?
It means the weight of the racket sits closer to the handle than to the head. The racket therefore swings faster and more manoeuvrably through the air. It gives up some pure smash power but gains in reaction speed and is friendlier on wrist and elbow.
How do you measure the hardness and swingweight of a racket?
We use professional testing equipment specifically developed for measuring racket sport equipment. The racket is secured and the machine measures the actual physical properties. No estimates, no copied manufacturer values. Every racket we review goes through the same measurement process.
Can I try this racket before I buy?
Yes. At PadelShop you can test a racket on court for 29.95 euros before you decide. If you like it, we deduct the test fee from the purchase price. Book online or come by in Alphen aan den Rijn.
Why buy at PadelShop.com?
Authorised dealer: Adidas, NOX, Bullpadel, HEAD, Wilson, Babolat, Black Crown, Munich, Dunlop and more.
Own stock in the Netherlands. Orders placed before 16:00 ship the same day.
We measure every racket on professional testing equipment, no copied manufacturer values.
Padel Experience Center: Hoorn 135, Alphen aan den Rijn.
Racket test: 29.95 euros. Play the racket on court before you decide.
Personal advice: WhatsApp, phone, email or visit us in person.
4.8 on Trustpilot | over 2,800 reviews | hardware partner of The Padellers NL & DE.
View the NOX AT10 18K Alum 2026
For players with padel elbow, wrist pain or a sensitive shoulder, the Nox AT10 Pro Cup Soft 2026, the Nox Equation Soft Advanced 2026 and the Nox AT10 Luxury Genius 12K Alum XTREM Lite 2026 are the strongest choices in the current collection. All three combine a soft core, a large sweet spot and the patented Nox Custom Grip®, which is certified by Testea Padel to reduce vibration transfer by 29%. For maximum protection, you stack a Noene Anti Shock Padel Grip underneath, which absorbs up to 96% of the shocks before they reach your hand.
This guide explains honestly how arm injuries develop in padel, which racket characteristics protect your arm, and which combination of Nox racket plus accessories we recommend most often in our Experience Center for players with physical complaints. No marketing, just what we see working.
First, how do arm injuries develop in padel?
Padel elbow (lateral epicondylitis) and wrist pain are the most common injuries among padel players, and the numbers are climbing alongside the sport's growth in the Netherlands. That makes sense: if you were one of the 876,000 padel players in the Netherlands in 2025 and you played at least twice a week, the strain on your elbow and wrist accumulates fast.
The core of the problem is vibration transfer. Every time the ball hits your racket, a shockwave is generated. A clean hit in the sweet spot delivers a short, contained vibration. An off-centre hit, an overly heavy ball or a flawed swing technique generates a much larger shock that travels from the racket through the grip into your wrist, elbow and ultimately your shoulder.
Three factors determine whether that shock becomes an injury:
The stiffness of the racket. Stiff materials like 18K carbon and hard EVA cores transfer vibrations undamped. Softer materials absorb part of the impact.
The balance and weight. A racket that's too heavy or too head-heavy increases the leverage acting on your wrist and elbow with every swing.
The grip and dampening. The interface between your hand and the racket determines how much vibration actually reaches your arm.
Good news: you can do something about all three.
What should an arm-friendly Nox racket have?
In Alphen aan den Rijn we use four criteria for players with active or historical complaints:
Soft to medium-firm core: HR3 Soft EVA, HR3 White EVA or MLD Black EVA with a soft layer. These cores hold the ball on the face slightly longer and absorb more shock than hard HR3 Black EVA.
Round or teardrop shape with a large sweet spot:Â the bigger the tolerant zone, the fewer high-vibration off-centre hits you produce.
Lighter weight (350–365 grams) or a Lite version: less mass on the lever, less load per swing.
Low to medium balance point:Â weight closer to your hand means less rotational load on your wrist and elbow.
Diamond models, high balance points and stiff 18K faces are off the table for this group. Not because they're bad, but because they do the opposite of what your arm needs right now.
The three best Nox rackets for arm pain in 2026
Nox AT10 Pro Cup Soft 2026
Our most recommended option for advanced players with complaints. The Pro Cup Soft is built on the Pro Cup mould and specifically tuned for comfort.
Shape: round (Nox officially classifies this racket as teardrop, but our own measurements in the Padel Experience Center show a sweet spot position and weight distribution that fall clearly in the round category)
Weight: approximately 360–375 grams
Core: HR3 Soft EVA (soft, strong vibration dampening)
Frame: carbon
Face: aluminised fibreglass (flexible and elastic)
Technologies: EOS Flap, Pulse System (extra vibration dampening), Custom Grip®
What sets it apart: aluminised fibreglass instead of pure carbon on the face, which gives a fundamentally softer contact feel than the AT10 Luxury models. Combine that with the HR3 Soft EVA core and you have a racket that feels like a Luxury but treats your arm like an entry-level racket.
Important to know: despite Nox listing this racket as a teardrop, on court it behaves like a round racket, the sweet spot covers nearly the full face and the balance sits lower than you would expect from a true teardrop. That actually works in your favour if you have arm complaints, because round rackets are the most forgiving on off-centre hits and place the lowest rotational load on your wrist and elbow. We measured this ourselves with our professional measurement equipment, and that's the advice we give every customer who asks about this model.
For players who don't want to drop back to an Equation but do want to protect their elbow, this is the most logical answer in the AT10 segment.
Nox Equation Soft Advanced 2026
For players in the entry-level and mid-range, this is the strongest recommendation. We regularly suggest this model to customers who recently started playing padel but already developed complaints, often because they began with a racket that was too stiff or too heavy.
Shape: round
Weight: 360–375 grams
Core: HR3 Soft EVA
Frame: carbon
Face: Exclusive Spin (textured for ball control)
Level: beginner to intermediate
The round shape gives you the largest sweet spot in the range, dramatically reducing off-centre hits and their vibrations. The HR3 Soft EVA core dampens whatever's left. For recreational players with complaints who still want to play with carbon, the Equation Soft Advanced is the smartest insurance against worsening symptoms.
Nox AT10 Luxury Genius 12K Alum XTREM Lite 2026
The Lite version of Tapia's signature racket. Specifically built for players who want to stay in the Luxury segment but feel less weight and less stiffness in the hand.
Shape: round (Nox officially classifies this racket as teardrop, but our own measurements show clearly round behaviour — the sweet spot covers almost the full face and the balance sits lower than the standard AT10 Genius models)
Weight: 355–365 grams (lighter than the standard AT10)
Core: HR3 White EVA (softer than the Black EVA in standard AT10)
Face: Carbon 12K Alum Xtrem with Dual Spin texture
Technologies: Weight Balance, EOS Tunnel, Custom Grip®, SmartStrap®
What makes this racket special: it's the only Luxury Genius model with the softer White EVA core, and on court it plays as a true round racket despite the official teardrop label. That combination is significant for players with complaints, because you get the premium materials and technologies of the top tier, including the Weight Balance system that lets you shift balance closer to your hand for less rotational load combined with the forgiveness of a round racket and a softer core.
A note on the discrepancy: we mention this difference between manufacturer specs and our own measurements because it directly affects whether this racket is right for you. If you were avoiding it because the spec sheet said teardrop and you wanted round, the on-court reality says: this racket is closer to what you're looking for than the spec suggests. We can show you the measurements at the Experience Center.
For advanced and semi-professional players with complaints who don't want to compromise on the pro feel, this is one of the most arm-friendly Luxury models in the entire 2026 range.
A summary in one table
Nox racket 2026
Shape (real, on court)
Weight
Core
Level
AT10 Pro Cup Soft 2026
round*
360–375 g
HR3 Soft EVA
advanced
Equation Soft Advanced 2026
round
360–375 g
HR3 Soft EVA
beginner–intermediate
AT10 Luxury Genius 12K Alum XTREM Lite 2026
round*
355–365 g
HR3 White EVA
advanced–pro
*Nox lists this model officially as teardrop, but our measurements in the Padel Experience Center show round behaviour on court.
The Nox Custom Grip® — patented and lab-certified
A key reason we often recommend Nox to players with complaints: every Luxury model and most recent collection models come fitted with the patented Nox Custom Grip®, certified by Testea Padel (the independent laboratory at the Universitat Politècnica de València).
The numbers behind Custom Grip are concrete:
+52% improved grip compared to standard grips
−29% vibration transfer to the hand
For players with epicondylitis (padel elbow) or sweaty hands, that's exactly what you want. A sweaty, slipping grip forces you to squeeze the racket unnecessarily hard, which dramatically increases muscle tension in your forearm and contributes directly to epicondylitis. Custom Grip® addresses both sides of the problem at once.
For maximum protection: stack a Noene Anti Shock Grip underneath
This is the combination most padel players don't know about, and it's our standard solution at the Experience Center for customers with serious arm complaints: a Noene Anti Shock Padel Grip as a base grip underneath your normal overgrip.
Noene is an Italian material originally developed for military and medical shock dampening. It's used by various sports professionals to absorb repetitive impacts. In padel, the numbers are striking: the Noene Anti Shock Padel Grip absorbs up to 96% of vibrations before they reach your hand.
How do you use it? The Noene grip is a base grip: you install it once over the standard grip on your racket, then add your usual overgrip on top. It stays in place — you don't replace it every time you swap overgrips. One investment, years of protection.
We specifically recommend the Noene Anti Shock for:
Players with active padel elbow or a history of tennis elbow
Players on court more than three times a week
Players over 45 who feel cumulative vibration load more strongly
Players recovering from an arm or wrist injury who want to prevent recurrence
On a Nox AT10 Pro Cup Soft 2026 with Custom Grip® plus a Noene base grip underneath, you're at roughly the maximum protection current padel technology can offer.
Three things we want to set straight
Three common assumptions we encounter every week in our Experience Center.
"A heavier racket means more vibration, so it's worse for my arm." Not quite. A heavier racket actually dampens vibration more than a light one, because the mass absorbs the shockwave. The problem isn't absolute weight — it's too much weight in the head (high balance). A 370-gram racket with low balance can be friendlier to your arm than a 350-gram racket with high balance.
"Padel elbow comes from a weak swing." Sometimes, but far more often it comes from squeezing too hard into a too-stiff grip which is technically still a symptom of the wrong material, not bad technique. A better grip solves half the problem without you needing a single coaching session.
"My racket is fine, I just need to play through it until it goes away." Almost never good advice. Padel elbow that you don't address evolves from annoying to chronic in months. The racket is a direct contributing cause in around 80% of cases. If your arm is nagging you, it's time to look critically at your equipment before you develop structural damage.
Unsure about your situation? Book a racket test with us
In our Padel Experience Center in Alphen aan den Rijn we work specifically with players who have arm complaints. We have professional measurement equipment (one of only five in Europe) that objectively measures the stiffness, swing weight and sweet spot position of every racket. During a test on our indoor padel court, a specialist watches your swing speed, your natural contact point and your technical biases, then builds advice that fits your body and playing style.
For customers with complaints we almost always set up a test pair from the three models above, plus a Pro Cup Soft or Equation already fitted with a Noene Anti Shock grip, so you can feel the difference directly in your arm. Often within ten minutes it's clear which combination will solve your symptoms.
The racket test is a paid service (bookable via our website), including coffee or tea, personal guidance from a specialist with more than ten years of experience, and access to over a hundred test rackets plus our measurement equipment. If you buy a racket the same day, the test fee is credited against your purchase.
Frequently asked questions
Which Nox racket is best for padel elbow? The Nox AT10 Pro Cup Soft 2026 for advanced players, the Equation Soft Advanced 2026 for recreational and intermediate players, and the AT10 Luxury Genius 12K Alum XTREM Lite 2026 for players who want to stay in the Luxury segment. All three feature a soft EVA core, a large sweet spot and the Custom Grip® which reduces vibration by 29%. For maximum protection, stack a Noene Anti Shock Padel Grip underneath.
Does a Noene grip really help against padel elbow? Yes, and the effect is measurable. Noene absorbs up to 96% of the vibrations that would otherwise reach your hand. For players with active complaints, that's the difference between being able to keep playing and having to stop. For preventive use it works too: you stop cumulative vibration damage from building up over hundreds of sessions.
Should I switch to a lighter racket for arm pain? Not necessarily. A lighter racket (Lite version of 355–365 grams) certainly helps, but the real difference comes from the combination of core (soft), balance (low to medium) and grip (Custom Grip + Noene). Some players actually benefit from a slightly heavier racket with good dampening, because the mass absorbs the shock. When in doubt: come and test it at our Experience Center.
Is an 18K Nox racket always bad for my arm? Not always, but for players with complaints, 18K is rarely the best choice. The stiffer face transfers vibration more directly than 12K or fibreglass-alum. If you have no complaints and play with consistent technique, 18K is fine — but as soon as complaints appear, choose 12K, fibreglass-alum or a Lite version deliberately. See also our breakdown of the difference between Nox 12K and 18K carbon.
Why do you list the AT10 Pro Cup Soft and AT10 Luxury Genius Lite as round when Nox calls them teardrop? Because we measured them ourselves. In our Padel Experience Center we use professional measurement equipment (one of only five units in Europe) to objectively assess the actual sweet spot position, swing weight and balance of every racket in our range. For these two specific 2026 models, the on-court behaviour matches a round racket far more closely than a teardrop, regardless of how Nox classifies them. We share this honestly because it directly affects which racket suits which player.
How do I know if my complaints come from my racket? Three simple signals: pain that specifically appears after padel and not during other movements, pain that worsens with the same level of play (while your technique hasn't changed), and sweaty hands that force you to squeeze hard during sessions. Two out of three? Time to look at your equipment critically. Three out of three? Book a racket test, because your arm is asking for it.
Does Noene work for injuries other than padel elbow? Yes. Wrist pain, shoulder pain (especially in net players) and even neck complaints related to repetitive shocks can be reduced with better vibration dampening. The mechanism is the same: less shock transfer to the upper arm and torso means less cumulative load on every joint in the chain.
The difference between Nox 12K and 18K carbon comes down to the density of the carbon fibres on the racket face. 18K carbon uses finer fibres woven more densely, which gives a stiffer, harder feel and a direct, dry response off the ball. 12K carbon has slightly less dense weaving, which delivers a touch more dampening and flexibility and is less demanding on technique. Both are premium materials, both are used in the same top-tier models, and neither is objectively "better" than the other. The difference comes down to which feel suits your arm and your technique.
This guide explains exactly what 12K and 18K mean, how Nox uses them in the 2026 collection, and which type of player tends to fit which variant. We close with the choice we make most often for customers in our Experience Center.
What do 12K and 18K actually mean?
The "K" in 12K and 18K stands for the number of filaments per carbon tow used to weave the racket face, expressed in thousands. 12K means each carbon tow contains 12,000 individual fibres. With 18K, that's 18,000 per tow.
The more filaments per tow, the finer and tighter the weave, and the stiffer the resulting surface. That has direct consequences for how the racket responds when the ball hits the face.
One thing to flag up front: the number on its own says nothing about quality. An 18K isn't automatically better than a 12K, just like a thicker string in a tennis racket isn't automatically better than a thinner one. They're two different choices for two different playing styles.
How does Nox 12K carbon feel on court?
A 12K face gives you a slightly softer, more forgiving feel on the ball. Not soft like fibreglass, but less dry and rigid than 18K. With Nox, you'll notice this most in:
More dampening on off-centre hits. Miss the sweet spot slightly and it doesn't feel as harsh as it would with 18K. The ball stays on the face a fraction longer, giving you more time to direct it.
A bit more comfort over long sessions. Vibrations transfer less directly, which is welcome if you have a sensitive elbow or wrist or play extended rallies.
A friendlier learning curve. For players still working on consistent contact, 12K leaves more room for error without punishing your arm.
In the 2026 collection, 12K has evolved into Carbon 12K Alum Xtrem, an aluminised variant where fibre waviness has been reduced by 50%. The result is a finer, more uniform surface that's stiffer than earlier 12K versions. Thanks to the aluminisation, the racket also performs consistently across temperature changes — a common issue on cold indoor courts or in summer heat.
How does Nox 18K carbon feel on court?
An 18K face feels stiffer, drier and more direct. There's less buffer between you and the ball: what you do, happens immediately. With Nox, you'll notice this most in:
A harder, snappier response. The ball comes off the face faster and more aggressively. On clean smashes and high volleys, this feels brilliant.
Less forgiveness on non-central hits. Miss the sweet spot and you'll know about it. The racket asks for consistent technique.
More feedback to your hand. You feel exactly what the ball is doing, which is great when you're refining your game and shaping shots by feel.
At Nox, 18K is implemented in the Luxury models as Carbon 18K Alum, an aluminised version that, like 12K Alum Xtrem, stays stable across temperature shifts. The extra density of 18K gives the face an unmistakably more powerful, "pro-grade" feel that fans of the material recognise instantly.
12K vs 18K in the Nox 2026 collection
In 2026, Nox runs both variants in parallel within the same top-tier models. That's deliberate: it lets you choose the same shape and same core, then dial in the surface material to match your preference.
2026 model
12K version
18K version
Main core
AT10 Luxury Genius (round)
AT10 Luxury Genius 12K Alum XTREM
AT10 Luxury Genius 18K Alum
MLD/HR3 Black EVA
AT10 Luxury Genius Attack (diamond)
AT10 Luxury Genius Attack 12K Alum XTREM
AT10 Luxury Genius Attack 18K Alum
HR3 Black EVA / MLD
AT10 Luxury Genius Lite (round, lighter)
AT10 Luxury Genius 12K Alum XTREM Lite
–
HR3 White EVA
Why this matters: you don't have to choose between shape and core first only to get locked into a fixed feel. You pick the playing style first (Genius for all-round play, Attack for aggressive net play), then the feel layer (12K Alum Xtrem for slightly more dampening, 18K Alum for maximum stiffness).
Which one suits which type of player?
Choose Nox 12K carbon if you:
Have an all-round playing style and play both defensively and offensively
Play long sessions and value comfort
Have a sensitive elbow or wrist or a history of arm complaints
Are stepping up to the AT10 segment from a Pro Cup or Equation
Deliberately want slightly more error tolerance without dropping back to a softer material
Choose Nox 18K carbon if you:
Are an aggressive, attacking player who finishes points at the net
Are technically consistent and trained, with reliable contact in the sweet spot
Appreciate a dry, hard feel that tells you exactly what the ball is doing
Have no arm issues and are used to stiff materials
Want maximum explosiveness on smashes and vÃboras
What we see most often in our Experience Center
In Alphen aan den Rijn, we regularly meet customers who are convinced they want 18K because it's supposedly the "better" or "more professional" material. That's a misconception we want to address honestly.
In practice, 12K suits the vast majority of recreational and advanced players better. Not because 12K is easier, but because most players don't yet have the technical consistency and swing speed needed to truly exploit 18K. With 18K, every off-centre hit feels harsh in the hand, and those add up across hundreds of shots in a session.
We mainly recommend 18K to players who train multiple times a week, have an aggressive playing style and already have experience with stiff diamond models. For everyone else, 12K Alum Xtrem is actually the smarter choice in 2026, because the Alum Xtrem evolution has narrowed the stiffness gap with 18K without giving up the comfort advantage.
What does Tapia himself play?
AgustÃn Tapia, FIP world number one since 2023 and the face of Nox, plays the AT10 Luxury Genius 12K Alum XTREM 2026 in the current season. That tells you something. Tapia is known for his precision and his ability to construct points from the baseline, not just to finish at the net. The slightly higher dampening and lower error margin of 12K suits a game built on placement and variation.
His teammate Edu Alonso also plays a 12K, the EA10 Ventus Hybrid 12K XTREM 2026. That's no coincidence. The 2026 evolution of 12K Alum Xtrem has lifted the material to a level where even the absolute top of the sport actively chooses it.
Still in doubt? Test both first
You only really feel the difference between 12K and 18K with the racket in your hand on court. Reading specs helps you understand what to look for, but the final choice is made by feel.
In our Padel Experience Center in Alphen aan den Rijn, we routinely set up a test pair for undecided customers featuring the same Nox shape in both variants — for example the AT10 Luxury Genius 12K Alum XTREM 2026 alongside the AT10 Luxury Genius 18K Alum 2026. Ten minutes on our indoor padel court is enough to feel the difference. Our measurement equipment (one of only five in Europe) then lets us put the objective numbers next to your subjective feel.
Frequently asked questions
Is Nox 18K more expensive than Nox 12K? Not necessarily. In the 2026 collection, the AT10 Luxury Genius 12K Alum XTREM 2026 and the AT10 Luxury Genius 18K Alum 2026 are priced the same (€389.99 RRP). The same goes for the Attack variants. You're paying for the Luxury tier as a whole, not for 18K specifically.
What exactly is Carbon 12K Alum Xtrem? That's Nox's 2026 evolution of the 12K material. By aluminising the carbon and reducing fibre waviness by 50%, you get a finer, more uniform and stiffer surface than earlier 12K versions. Key benefit: the racket performs more consistently across temperature changes, both on cold indoor courts and in summer heat.
Which is better for my elbow: 12K or 18K? 12K, in the vast majority of cases. The slightly less dense weave provides more dampening on off-centre hits, and that's exactly where elbow strain accumulates. If you have a history of padel or tennis elbow, choose 12K without hesitation, ideally combined with a Nox Custom Grip® which, certified by Testea Padel, reduces vibration by 29%.
Can I play 18K as a beginner or intermediate player? Technically yes, in the sense that the racket won't stop you. Practically, we'd advise against it. 18K punishes inconsistent technique with a hard response and little forgiveness. Beginners and intermediate players develop faster with a 12K — or better still, with a softer entry-level racket like an Equation or Pro Cup.
What's the difference between 12K, 18K and 3K at Nox? 3K is a less densely woven carbon with a softer feel, used in models like the ML10 Ventus Control 3K 2026 by Miguel Lamperti. 12K sits in the middle of the spectrum (premium, all-round). 18K is the densest and stiffest material in the main range. The higher the number, the stiffer and more direct the feel, and the more technique the racket asks of you.
Do 12K and 18K feel different across other padel brands too? Yes, but every brand processes the material differently. An 18K from Bullpadel doesn't feel identical to an 18K from Nox or Adidas, because the core, the mould and the finish all shape how the carbon behaves. Comparing specs between brands only works as a rough indicator. For a fair comparison, you need to test the rackets physically side by side.
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