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. This wheel is optimized for 28mm tubeless tires for all out speed. The 454 NSW features Zipp’s most advanced technologies. 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? The 454 NSW Tubeless Disc brake is roughly a pound (more than 400 grams) lighter than its predecessor! 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. At the center of the 454 NSW is the Cognition V2 Hubset re-engineered with an updated Axial Clutch V2™ mechanism for quicker engagement, lower friction, and improved durability.FEATURESCognition hubset rolls efficiently whether you are pedaling or coasting with Axial Clutch V2™ technologyThe 454 NSW Tubeless Disc brake is roughly a pound (more than 400 grams) lighter than its predecessor!TSE™ for greater efficiency and reduced rolling resistanceSawtooth™ rim with Hyperfoil™ nodes and HexFin™ ABLC dimple pattern for top aero and crosswind-stability performance with an undulating 53/58mm rim depthZipp graphics applied using Zipp’s ImPress™ direct-print technologyXDR™ or SRAM/Shimano driver bodiesShips with 12mm front and rear end capsCenter locking rotor interface. Lockring is included with the wheelsCampagnolo driver body sold separatelyLifetime warranty SPECIFICATIONSOrientation (wheels): FrontSize (wheels): 700cRim construction: Carbon – HooklessTire compatibility: Tubeless tires onlyRim depth: 58mmSurface texture: ABLC HexFinBrake compatibility: Disc (Center Lock)Rim - inside width: 23mmRim profile: SymmetricalRim finish: UD fiber, Impress technologyColor (Decal): StandardNipple material: AluminumNipple anti-rotation: Sapim Secure-LocSpoke type: CX-Ray - BlackSpoke count: 24Spoke pattern: 2 CrossHub: Cognition 2Driver body type: n/aColor (hub): BlackAxle type (Wheels): TA 12x100Axle material: Aluminum front & rearBearings: Cartridge - Stainless SteelDriver Mechanism: n/aDriver body material: n/aMax tire pressure: 73psiMax recommended rider weight: 250lbsSpoke Length DS: 254mmSpoke Length NDS: 252mmMax outside width: 28mm