NOTE: These are the 2026 updated version. 

The 2026 CS4045 has wider wheels and is lighter than the first generation, weighing only 1,140g. The shaft core structure adopts adjustable free clearance of the bearing. The front 40 and rear 45 configuration offers excellent handling performance and can maintain power output even in climbing races.

What changes have been made to the 2026 CS4045?

• Wider rims, with the rear wheel's inner width changed from the original 21mm to 24mm.
• Lose 40g in weight
• Adjustable bearing preload

The 2026 CS4045 wheel set features a brand-new design for the hub structure and the layup of the wheel rims. While maintaining the performance of the previous generation, the wheel width has been increased and the weight has been reduced by 40g.

Locking the wheel set onto the frame will cause the shaft core to deform, thereby exerting axial force on the bearing, which will accelerate the wear of the bearing and significantly reduce its service life.

The new hub adopts a structure with adjustable bearing preload to provide the best performance and ensure a longer service life of the bearings.

Rider Weight Limit

The rider weight limit on this wheel set is 110kg including the weight of bike and luggage.

Light, Aero Rims

When it comes to saving weight on a set of wheels, the rims are the place to start - this is where you feel the greatest benefit in speed and handling.

Lighter rims improve acceleration and climbing performance -

They also improve the handling and overall flexibility of the bicycle, making the ride full of vitality.

Our rims are made of Toray T700 and T800 carbon fiber from Japan and use a ring-shaped aerodynamic design to cut through the air. They are 29.5 millimeters at the rim edge and are widened to a maximum of 31.6 millimeters.

Easy Fit, Tubeless Ready

Suitable for both tubeless tyres and clincher tyres with inner tubes – whichever you prefer.

Suitable For A Wide Range Of Tyre Sizes

Our rims are perfect for today’s most popular road tire sizes are optimized for 28C tires. If you want to use wider tires,they can be used with tires up to 45C.

Lightweight screw-lock hub

Screw-lock hub designed by CRW Works （ZL 2022 2 3355786.8），greatly improving the rigidity of the wheelset. 

The same weight hubs we use bigger bearings, 2x6902 front hub, 2x6902 and 2x6802 rear hubs.

36T plane gear freehub for rapid engagement and reliability.

Available with Shimano and Sram XDR freehubs.

Spokes

Has its own patented double threaded carbon fiber spoke.（ZL 2023 2 1468923.0）

Specifications

• Spokes: Aero blade carbon spokes
• Width (External): 31.6mm front / 31.6mm rear
• Width (Internal): 24mm front / 24mm rear
• Bearings: TPI ceramic bearings
• Hub System: 36T star ratchet
• Rims: UD paintless finish
• Decals: Choice of black or white
  

Mfr Claimed Weight
1140g per set (±2%)