OVERVIEW Zipp’s 404 Firecrest Tubeless Disc brake is a pro-proven Speed Weapon for any situation. The 404’s heritage as Zipp’s icon of speed extends back decades, and its future is even brighter. At 58mm deep, the 404 Firecrest Tubeless is ideal for road races, time trial and triathlon, gran fondos, and riding over varied terrain. The wheelset’s 23mm internal width is perfect for running wider tubeless tyres at reduced air pressure. That is a vital component of Total System EfficiencyTM, or TSETM, an approach to speed on ever-changing roads and riding conditions. Specifically, TSETM focuses on overcoming specific barriers to speed: wind resistance, gravity, rolling resistance, and vibration losses. Zipp’s ABLCTM SawtoothTM Technology uses an intricate dimpling pattern to improve aero efficiency. Zipp’s use of hookless (straight side) rims in the 404 Firecrest 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. At the centre of the 404 Firecrest Tubeless Disc-brake is a versatile and durable new hubset, the German-engineered ZR1 DB. If you had to choose just one wheel for road riding and racing, the 404 Firecrest Tubeless Disc brake is a savvy and speedy choice. FEATURES Versatile aero wheelset for the modern road bike with tubeless and hookless rim profile Optimized tyre bed for easy tyre installation Wide 23mm rim profile creates a better tyre interface to be fast on or off the road New ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement Ships with 12mm front and rear end caps Centre locking rotor interface. Lockring is included with the wheels XDRTM or SRAM/Shimano driver bodies Campagnolo driver body sold separately Lifetime warranty SPECIFICATIONS Orientation (wheels): Front 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, adhesive decals colour (Decal): Standard Nipple material: Aluminium Nipple anti-rotation: Sapim Secure-Loc Spoke type: CX-Ray - Black Spoke count: 24 Spoke pattern: 2 Cross Hub: ZR1 Disc Brake Driver body type: n/a colour (hub): Black Axle type (Wheels): TA 12x100 Axle material: Aluminium front & rear Bearings: Cartridge - Steel Driver Mechanism: n/a Driver body material: n/a Max tyre pressure: 73psi Max recommended rider weight: 250lbs Spoke Length DS: 254mm Spoke Length NDS: 252mm Max outside width: 28mm Part Weight (g): 839