The Zipp 454 NSW Tubeless Disc-brake wheelset represents the pinnacle of road racing performance. Engineered for the discerning cyclist, these wheels excel in every performance metric that matters. The innovative 58mm SawtoothTM rim with HyperfoilsTM technology delivers exceptional aerodynamic efficiency and remarkable stability across all wind conditions. The wider rim profile is specifically designed for tubeless tyres at lower pressure, reducing rolling resistance and dampening vibrations to maximise your energy transfer on the road. For optimal speed, these wheels are specifically tuned for 28mm tubeless tyres. At the heart of the 454 NSW is Zipp's Total System EfficiencyTM (TSETM) approach, which tackles the four primary speed inhibitors: wind resistance, gravity, rolling resistance, and vibration losses. The latest iteration impressively sheds over a pound (more than 400g) compared to its predecessor. The hookless (straight side) rim design is a key performance feature, creating a seamless transition between tyre and rim for improved aerodynamics. This construction also allows for more efficient resin distribution, resulting in wheels that are both lighter and stronger. Powering it all is the redesigned Cognition V2 Hubset featuring an updated Axial Clutch V2TM mechanism that delivers faster engagement, reduced friction, and enhanced durability. FEATURES Cognition hubset rolls efficiently whether you are pedalling or coasting with Axial Clutch V2TM technology The 454 NSW Tubeless Disc brake is roughly a pound (more than 400 grams) lighter than its predecessor! TSETM for greater efficiency and reduced rolling resistance SawtoothTM rim with HyperfoilTM nodes and HexFinTM ABLC dimple pattern for top aero and crosswind-stability performance with an undulating 53/58mm rim depth Zipp graphics applied using Zipp’s ImPressTM direct-print technology XDRTM or SRAM/Shimano driver bodies Ships with 12mm front and rear end caps Centre locking rotor interface. Lockring is included with the wheels Campagnolo driver body sold separately Lifetime warranty SPECIFICATIONS Size (wheels): 700c Rim construction: Carbon - Hookless Tyre compatibility: Tubeless tyres only Rim depth: 58mm Surface texture: ABLC HexFin Brake compatibility: Disc (Centre Lock) Rim -inside width: 23mm Rim profile: Symmetrical Rim finish: UD fibre, Impress technology Spoke type: CX-Ray - Black Spoke count: 24 Spoke pattern: 2 Cross Hub: Cognition 2 Driver body type: SRAM/Shimano Road or SRAM XDR Axle type (Wheels): TA 12x142 Axle material: Aluminium front & rear Bearings: Cartridge - Stainless Steel Driver Mechanism: Axial Clutch V2, 54 POE Driver body material: Aluminium Max tyre pressure: 73psi Max recommended rider weight: 250lbs Spoke Length DS: 248mm Spoke Length NDS: 254mm Max outside width: 28mm Weight 1428 g (pair) ZIPP LIFETIME WARRANTY When you buy new Zipp wheels and components you are backed by a global lifetime warranty. This includes manufacturing defects, but also any system failure occurring while riding your bike within the intended use of your Zipp product. If your Zipp product fails while riding, Zipp will replace or repair it free of charge. Examples of coverage while riding: You are riding in a group, hit a pothole that nobody announced, and your wheel is damaged. You are covered. You’re flying down a singletrack on your MOTO wheels and you crack a rim on a sharp rock you didn’t spot? You are covered. The warranty does not apply to damage occurring outside of riding your bike; or if you ride your Zipp products beyond intended use.