Cadex has unveiled the new lightweight Max CXR wheelset, which combines with its also newly launched CXR tyres to create an aero wheel system for gravel racing.
The new gravel wheels and tyres were designed together with the aim of producing the ultimate aero gravel package.
Jeff Schneider, global head of product at Cadex, explains: "With the Max GXR, we focused on the demands of modern gravel racing, where riders need efficiency, control, and durability at increasingly high speeds.”
The CXR wheelset was developed by Cadex’s wheel engineers to meet the needs of stablemates Giant and Liv. The sibling brands have today released new pure-racing gravel bikes alongside the wheel and tyre system.
The Liv Devote Advanced SL and Giant Revolt Advanced SL both feature the Max CXR WheelSystem on their flagship SL 0 models.
Cadex has concentrated on upping the aero performance of the new wheels and tyres, increasing the transmission stiffness, and improving the durability to impacts as demanded by fast, long-distance gravel racing.
- "It changes what's possible in every race situation" – new Giant Revolt Advanced SL is 'lightest and fastest gravel bike ever'
- "The demands of the sport are higher than ever" – new Liv Devote Advanced SL is fully focused on gravel racing
Full-carbon construction
The new 50mm-deep wheelset weighs in at a claimed 1,320g (including tapes and valves). That’s seriously light for gravel wheels this deep and wide. The low weight is down to Cadex using the same construction techniques as it does on its flagship road wheelset, the Max 40.
The new rim profile has a 25mm internal width with reinforced 5mm rim sidewalls. Cadex claims this toughened structure improves impact resistance, reduces the chances of pinch punctures and enables even lower tyre pressures than standard TSS (tubeless straight sided rims).
Bladed aero carbon spokes are bonded to Cadex’s high-flange carbon hubs. Cadex claims this construction method greatly reduces turbulence at the wheel centre. At the rim, the broad width and tyre form create a smoother interface compared to traditional rims. This improves airflow across the interface and reduces drag.
Cadex says wind-tunnel testing showed a system reduction of 4.61W over the previous Cadex AR35 wheelset with a narrower 40mm tyre.
Aero tyres?
The new GXR gravel tyre has been designed for mixed conditions, with a high-volume, fast-rolling centre tread and refined shoulder geometry that not only improves traction and control but also reduces drag, according to Cadex.
The tyres feature a supple 170TPI casing, with Race Shield+ puncture protection and X-Shield reinforced sidewalls for durability.
The tyres come in 45 and 50mm sizes.
Cadex Max GXR pricing details
- Cadex Max GXR WheelSystem: £3,499 / $4,000 / €3,799 / AU$5,399
- Cadex GXR Tyre (45 or 50mm): £65 / $85 / €99 / AU$110
