Cadex Max 40 Wheels reviewed: $4500/£3500 is hard to justify; you just enjoy the ride

When the cycling industry, in its pursuit of performance excellence, pushes into the realms of the extraordinary, the price tag follows. All year, we’ve been writing about $18,000 race bikes, $4,600 groupsets, $2,400 power metres and $500 saddles. These days, premium products demand a premium investment, and Cadex’s newest wheelset, the Max 40, is no different. While they’re not quite in the luxury tier of the likes of Partington or Lightweight, they’re certainly a tier above Enve or Roval, which are already considered “premium.”

Dropping $4,500 on a set of wheels is nothing short of extravagant, and many consumers will never consider equipment in this price range. So, I will begin this review where I usually end it: by examining the value.

I’m not someone who will argue in favour of fancy for fancy's sake. A hefty price tag doesn’t inherently mean the product will impress. But after several months on these wheels, I have to admit: the Max 40s have won me over. My admiration for the engineering and ride feel of the Max 40s has grown with each ride, even though I struggle to justify the price tag. And therein lies the reviewer’s dilemma: how does one justify a $4,500 / £3500 wheelset? Honestly, you don’t. Some purchases transcend logical reasoning, tapping into passion, an appreciation for innovation and craftsmanship, or pure showboating. Whether it’s the allure of cutting-edge technology, the pursuit of excellence, or simply the joy of owning something different, the value lies in the experience and emotion it brings, not necessarily in the dollars spent.

So, with that said, meet the Cadex Max 40.

Introducing the Cadex Max 40

You’re forgiven if you aren’t familiar with Cadex as an aftermarket brand. The manufacturer of carbon fibre wheels, frames and other bike parts is a premium sub-brand of Giant, the biggest bicycle manufacturer in the world. Cadex was originally launched in the 1980s but reintroduced in 2019. The brand was developed to push the boundaries of performance through cutting-edge technology, with a particular focus on lightness, stiffness and aerodynamics. Its products are used by, and often developed with input from, the Giant-sponsored WorldTour teams, Team Jayco-AlUla and Liv AlUla Jayco. Cadex is to Giant as Roval is to Specialized, though Cadex increasingly acts as a standalone brand with its high-end products competing against the likes of Enve.

Cadex’s product categories are small but growing. Its wheel line consists of just five models with the Max 40 being the newest model, released this spring. In many ways, the new Max 40 makes the 36 Wheel, a climber wheel, redundant and questions the continuation of the 42 Wheel as well.

Light & Stiff

With a claimed weight of 1,249 grams for the wheelset, the Max 40 is the lightest wheelset the brand has ever offered. It’s also said to feature lab-test-proven aerodynamic advantages and the best-in-class stiffness-to-weight ratio on the market. Put to the test against Lightweight’s Obermayer EVO and Syncros’ Capital SL wheels, Cadex says the Max 40 wheelset was significantly stiffer (up to 44.9 percent) than its competitors.

Tubeless & Hookless

Like its previous models, the wheel sports a 22.4mm internal width and a hookless, tubeless rim. The rim is compatible with select tyres between 25 mm and 32 mm wide, but for optimum performance, Cadex suggests using its 28mm Race GC tyres.

Aero Benefits

Cadex says the 40mm rim depth “hits the sweet spot for optimal aerodynamic gains without adding weight or sacrificing stability in crosswinds.” Further aerodynamic gains come from the one-piece aero hub and spoke design. Here, the brand’s Super Aero Carbon Spokes are bonded straight into the aero hub flange, forming a one-piece structure with the hub. Alloy nipples are hidden at the rim for tuneability, but due to the one-piece hub design, the spokes cannot be replaced.

Finally, the 22.4mm inner rim width was designed to create a seamless interface between the rim wall and tyre sidewall for a more aero profile (assuming the tyre stays within the 25-32mm range).

Specs:

• Claimed weight: 1,249 grams
• Actual weight with tape and valves: 1,302 grams
• Price: Front: $2,000.00 / £1,499.99, Rear: $2,500.00 / £1,999.99
• Hub: Precision machined 48-tooth ratchet hub with Cadex ceramic bearings
• Shimano, SRAM XDR and Campagnolo N3W freehubs available
• Spokes: Cadex Super Aero Carbon Spokes. 16 spokes in the front, 24 spokes in the rear.
• Spokes are tuneable but not replaceable.
• Decal-free Graphics: Cadex’s carbon moulding technology allows fine-rim surface finishing treatment directly within the mould, eliminating the need for additional carbon treatment or decals.
• Rim: 40mm deep, internal width: 22.4
• Hookless, tubeless rim
• Compatible with 25-32mm tyres but aero-optimised around a 28mm tyre
• Max tyre pressure: 72.5 PSI
• Tyre combinability is limited, see chart here.
• Max rider weight: 285lbs
• Lifetime warranty and 5-year Incident Replacement

The Ride

I received my test set in the middle of July, and promptly put the wheels on my scale. They came in at 52 grams over the claimed weight, which Cadex attributes to the rim tape and valves not being included in the specifications.

For the best riding experience, Cadex included a set of its 28mm Race tyres, which were a breeze to mount. I’ve used Cadex tyres before, and have consistently been impressed with the supple ride feel and surprisingly good flat resistance despite the low weight. Designed for race day, these 28mm tyres come in at just 315 grams and feature a 170 TPI, single-layer casing for ride feel, superior rolling efficiency and low weight. This season, I’ve gravitated towards Pirelli's new P Zero Race TLR RS tyre, but after two months of riding, I would confidently put the Cadex tyres on par with the Pirellis.

When I hit the road on these wheels, my initial impressions were purely subjective.

First, these wheels look absolutely stunning. The black-on-black colourway, the sleek and modern profile, and those flat carbon spokes that disappear into the carbon-weave hub flanges showcase the advanced engineering and materials that went into them. Just by looking at them, you know you’re getting something special.

Secondly, that hub sound is something else. This may just be the loudest hub I’ve ever encountered. While pedalling, it produces a pleasant buzzing sound, but when you stop, the freehub engages with a sound that can be heard from a mile away. If loud hubs aren’t your thing, Cadex suggests packing the hubs with a heavier grease to dampen the noise; otherwise, consider your bike bell redundant.

Cadex says the Max 40 was built for speed and designed to meet the demands of the climbers and GC riders of its sponsored WorldTour teams. A wheel that offers “efficient power transfer, aerodynamics, and, above all else, ultralight weight.”

Now, I’m by no means a climber or WorldTour racer, but I thoroughly enjoy the Max 40 Wheelsystem all the same. It is everything Cadex claims it to be: lightweight, stiff, and the perfect all-rounder for long, undulating days in the saddle. The ceramic hubs spin smoothly and accelerate quickly. While they may lack the whoosh factor of deeper-rimmed wheels, they make up for it in quick handling. The steering is precise and predictable, maintaining traction without feeling glued to the road.

Given the wheels’ low weight and superior stiffness, it comes as no surprise that they are great climbers, and as rim depth is trending deeper across the board, 40mm is now shallow enough to be considered a climbers’ wheel.

Yet only 100 grams differentiates the Max 40 from the 50 Ultra. And at this year’s Tour de France Femmes, the riders of the Cadex-sponsored Liv AlUla Jayco team were happy to take the weight penalty in favour of whatever aerodynamic gains 10 extra mm of rim buys you. Despite the mountainous terrain of the latter part of the race, riders opted for the 50 Ultra due to the “all-round nature of the wheels.”

But for the everyday cyclist who may not have an arsenal of wheels to choose from, a 40mm rim depth makes a lot of sense. It’s versatile and strikes a good balance between aerodynamic benefits and weight. It’s stable in cross-winds, more comfortable and lighter than a deeper wheel but still offers some aerodynamic benefits.

I should also note that despite their stiff build, the Max 40s are surprisingly comfortable. Tyres play a role here, certainly, and again, the Cadex Race tyres did not disappoint. The ride feel and handling are superb, and the more I rode the Cadex Max 40 Wheelsystem, the more I liked it—the wheels will add noticeable stiffness and liveliness to any steed you mount these to.

Hub noise aside, I can’t fault the ride quality.

Some Limitations:

While the ride quality is superb, there are some limitations to the Max 40 Wheelsystem, starting with tyre compatibility. Cadex has put some of the most popular tyres through its test protocol and determined which are and are not compatible with its hookless design. The list of known compatible tyres is still rather short.

Also, due to the one-piece spoke and hub design, the carbon spokes are not replaceable. Should you develop a crack, you’re off to a carbon repair shop, which could get costly. This makes me nervous about wheel transportation – especially if flights are involved.

Conclusion

As mentioned in my opening paragraphs, the Cadex Max 40 wheels are an indulgence There are many great wheelsets that retail for a lot less. But a product like this borders on luxury and thus transcends logical reasoning.

If you’ve got the cash, the Cadex Max 40 wheelset offers a remarkable ride experience, combining stunning aesthetics with outstanding handling and speed, perfect for long, undulating rides.