Zipp: Zipp’s 454 NSW Tubeless Disc-brake is the ultimate road racing wheelset. This wheel delivers everything the performance cyclist demands. It’s aerodynamically efficient and stable in all wind conditions. What’s more, a wider rim is designed for tubeless tires at lower pressure for reduced rolling resistance and vibration damping, so you’ll lose as little energy as possible out on the road. For the best combination of aerodynamics and rolling resistance gains a 28mm tire is recommended on this wheel. Its undulating 58mm Sawtooth rim shape with Hyperfoils is our most aerodynamic and stable wheel. The 454 NSW features Zipp’s Total System Efficiency (TSE), our approach at combatting the biggest enemies of speed: wind resistance, gravity, rolling resistance, and vibration losses. And gravity? Zipp’s use of hookless (straight side) rims in the 454 NSW is integral to Making You Faster. With hookless, the transition between the tire and the rim is more seamless and aero. Zipp’s hookless rims have more efficient resin distribution, which means lighter, stronger wheels. The 454 NSW features the premium ZR1 SL hubset with ceramic bearings and 66 points of engagement. The hubset also is 30 g lighter than the predecessor hub in NSW wheels. Features The 454 NSW Tubeless Disc brake is roughly a pound (more than 400 grams) lighter than its predecessor! ZR1 SL hubset with ceramic bearings 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 Ships with 12mm front and rear end caps Center locking rotor interface. Lockring is included with the wheels Campagnolo driver body sold separately 1400g Lifetime warranty Specifications Orientation (wheels): Rear Size (wheels): 700c Rim construction: Carbon Hookless Tyre compatibility: Tubeless tyres only Rim depth: 58mm Surface texture: ABLC SawTooth Brake compatibility: Disc (Centre Lock) Rim - inside width: 23mm Rim profile: Symmetrical Rim finish: UD fibre, Impress technology Nipple material: Aluminium Nipple anti-rotation: Sapim Secure-Loc Spoke type: CX-Ray - Black Spoke count: 24 Spoke pattern: 2 Cross Hub: ZR1 SL Driver body type: SRAM/Shimano Road Colour (Decal): Standard Colour (hub): Black Axle type (wheels): TA 12x142 Axle material: Aluminium front & rear Bearings: Cartridge - Ceramic Driver mechanism: 6 Pawls Compression, 66 POE Driver body material: Aluminium Max tyre pressure: 73psi / 5.0bar Max recommended system weight: 250lbs / 114kg Spoke length DS: 252mm Spoke length NDS: 256mm Max outside width: 28mm