Zipp: WITHOUT LIMITS Zipp’s 303 Firecrest Tubular Disc-brake wheelset offers game-changing innovations for performance-minded cyclists. This wheelset was developed to meet the needs of our sponsored professional racers – road and cyclocross – as well as any cyclist who prefer the time-proven ride qualities of riding tubulars. The 303 Firecrest Tubular Disc-brake features key technologies first developed for Zipp’s halo-level NSW wheelsets. Our ABLC™ Sawtooth™ dimple design that extends all the way to the edge of the rim. The rim features construction upgrades that deliver improved impact resistance. These innovations enhance a wheelset that’s excelled in two of pro cycling’s harshest proving grounds, the Spring Classics and the Cyclocross World Cup. At the center of the 303 Firecrest Tubular is a versatile and durable new hubset, the German-engineered ZR1 DB.FEATURESNew Zipp graphics and cosmetic identity that scream speedGo-anywhere 45mm rim depth tubular pro proven in Spring Classics and Cyclocross World CupNew ZR1 DB hubset is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagementBuilt with Sapim CX Sprint J-bend spokesCenter locking rotor interface. Lockring is includedShips with 12mm front and rear end capsXDR™ or SRAM/Shimano driver bodiesCampagnolo driver body sold separately SPECIFICATIONSOrientation (wheels): RearSize (wheels): 700cRim construction: CarbonTire compatibility: TubularRim depth: 45mmSurface texture: ABLC DimplesBrake compatibility: Disc (Center Lock)Rim - inside width: n/aRim profile: SymmetricalRim finish: UD fiber, adhesive decalsColor (Decal): StandardNipple material: AluminumNipple anti-rotation: Sapim Secure-LocSpoke type: CX-Ray - BlackSpoke count: 24Spoke pattern: 2 CrossHub: ZR1 Disc BrakeDriver body type: SRAM XDRColor (hub): BlackAxle type (Wheels): TA 12x142Axle material: Aluminum front & rearBearings: Cartridge - Stainless SteelDriver Mechanism: 6 Pawls Leaf SpringDriver body material: AluminumMax tire pressure: 125psiMax recommended rider weight: 250lbsPart Weight (g): 744