Zipp 454 NSW 23mm Tubeless Disc Brake Carbon Rear Wheel (SRAM/Shimano)

Zipp's 454 NSW Tubeless Disc-brake is the ultimate road racing wheelset. This wheel delivers everything the performance cyclist demands.

Aerodynamic Efficiency, Stability

The undulating 58mm Sawtooth rim shape with Hyperfoils makes Zipp's 454 the most aerodynamically efficient and stable rim in the 404 family, and will perform brilliantly in all wind conditions.

Light weight, Reduced Vibrations, Better Grip, Lower Rolling Resistance

The 454 NSW Tubeless Disc- brake wheelset is more than 400 grams lighter than its predecessor! The wider rim is designed for running tubeless tyres at lower pressure for reduced rolling resistance and vibration damping. Zipp's use of hookless (straight side) rims in the 454 NSW is integral to Making You Faster. With hookless, the transition between the tyre and the rim is more seamless and aero. Zipp's hookless rims have more efficient resin distribution, which means lighter, stronger wheels. Designed to lose as little energy as possible out on the road the wheels are optimised for 25mm tubeless tyres for all out speed.

Reduced Drag and Friction

Check out the rear wheels to see what makes the NSW wheels so special.
Zipp's NSW Cognition DB V2 Hubset is re-engineered with Axial Clutch V2 for quicker engagement and lower friction in the rear wheel. Every time a conventional freehub starts to coast, friction within the freehub ratchet mechanism makes for inefficiencies, so Zipp got to work and came up with the light and durable hubset, the Cognition Disc Brake V2 hub with AxialClutch V2 technology. Drag is reduced by disengaging the ratchet mechanism when coasting. The AxialClutch V2's wave spring acts to re-engage the ratchet mechanism quickly and consistently once the rider starts pedalling.

Making You Faster

Outdoor testing commissioned by Zipp revealed the real-world gains of Zipp Total System Efficiency (TSE). A bike-and-rider system weighing 85kg (187lbs) on the new 454 NSW with 25mm tyres required 278 watts to maintain a speed of 40kph. That's a 10-watt savings compared with the previous model 454 NSW.