Designed via Zipp’s “Total System Efficiency” (TSE) format, the 404 Firecrest Carbon Tubeless CL Disc Wheelsetseamlessly blends aerodynamics, low weight, decreased rolling resistance and comfort to become the perfect choice for road races or efforts against the clock.
The full carbon rims are realised with a hookless tyre interface that helps to reduce weight and increase lateral stiffness. This hookless configuration has a 23mm wide internal measurement to increase the sidewall support of tubeless-ready tyres, allowing them to realise lower rolling resistance and better comfort at lower inflation pressures. The wider inner rim dimension also smooths the tyre-to-rim junction for improved aerodynamics.
The refined, 58mm deep profile of the rims combines with the ABLC surface dimpling to markedly lower drag and afford predictable handling when the wind blows hard from the side. The rims rotate around smooth spinning, well-sealed ZR1 DB hubs, with the rear utilising a 66-point freehub for rapid pedalling engagement. Sapim spokes arranged in a two-cross lacing pattern complete the build, ensuring durability and increased power transfer.
INCLUDES
12mm hub end caps
Center Lock lock rings
HIGHLIGHTS
The versatile, good-value 404 Firecrest is an exceptional pick for road races or efforts against the clock
Conceived via Zipp’s “Total System Efficiency” (TSE) design concept that equally factors aerodynamics, weight, rolling resistance and vibration losses (comfort)
A special tool that measures aerodynamic drag, rolling resistance, wind speed and wind yaw angle while on the road, was key in the development of these wheels
The TSE holistic design approach equals more speed in real-world riding conditions rather than just wind tunnels
The rims use a high grade of carbon fibre to lower weight, increase strength and improve lateral stiffness
The hookless internal rim design is for tubeless-ready tyres only, promotes a more aerodynamic tyre to rim interface and lowers weight via more even resin distribution
A 23mm internal rim width works optimally with wider tubeless-ready tyres, lowering rolling resistance and improving comfort
Optimised tyre bed for easy tyre installation
The 58mm deep, refined rim shape optimises aerodynamic efficiency and crosswind stability
An intricate rim surface ABLC dimple pattern further lowers drag
ZR1 DB hubs have a better seal design for improved durability and offer a quicker pedalling response thanks to the 66-point engagement free hub
24 spokes front and rear are laced with efficient and durable two-cross lacing patterns
Hubs: Front: Zipp ZR1 DB / Rear: Zipp ZR1 DB with 66-point freehub
Bearings: Cartridge - stainless steel
Freehub compatibility: SRAM XDR or Shimano HG/SRAM Road 11-speed
Brake compatibility: Disc
Disc standard: Center Lock
Front axle: 12mm x 100mm thru-axle compatible
Rear axle: 12mm x 142mm thru-axle compatible
Manufacturer claimed weight: Front: 660 grams / Rear: 790 grams / Wheelset: 1450 grams (based on an XDR, 12mm thru-axle configuration with no rim tape or valves included)
*Sealed Bearings*Spec:Front QR Disc Hub 14Gx36H, BLACK26.0 Disc Rim (19mm x 21mm) w/CNC v6.5 36H – Black254mm Spoke – ED Black inc 16mm Nipple256mm Spoke...
*Sealed Bearings*Spec:Rear QR Disc Hub 14Gx36H,Sealed Bearings, 8/9/10/11sp Cas, BLK26.0 Disc Rim (19mm x 21mm) w/CNC v6.5 36H – Black256mm Spoke – ED Black inc...