Zipp’s legendary speed weapon, the 404 Firecrest, is better than ever. This go-to rim-brake wheel is, for the first time, tubeless ready. That means you can run reduced tire pressure for reduced rolling resistance and increased cornering grip and compliance without the risk of pinch flats. This wheelset’s 58mm rim depth is a classic that has carried athletes to victory in every kind of event and situation – every triathlon distance, breakaways, field sprints and hilly finishes. Zipp’s ABLC™ Sawtooth™ Technology uses a complex dimpling pattern to improve aero efficiency. Zipp’s ShowStopper™ textured braking surface delivers unrivalled rim braking performance in wet or dry conditions. At the center of the 404 Firecrest Tubeless rim-brake is a versatile and durable new hubset, the German engineered ZR1. If you had to choose just one wheel for road riding and racing, the 404 Firecrest Tubeless is a savvy and speedy choice.
In developing the original 303 wheels, Zipp discovered that a wider rim increases lateral stiffness for sprinting and cornering while also providing greater vertical compliance for greater control, comfort and durability. That wider rim profile led ZIPP to develop our Firecrest technology, which revolutionized aerodynamic efficiency and stability for carbon wheels. The proprietary Firecrest rim shape optimizes the aerodynamic profile of the front half and - here's the revolutionary part - the back half of the wheel. Firecrest moves the wheel's center of pressure to be more in line with the steering axis for stability in even the stiffest crosswinds. All of that innovation along with the precision control of disc braking gives you a wheel that's as smooth as it is tough.
Zipp’s Sawtooth dimple design consists of 12 nodes that are specifically clocked to start aerodynamic shearing at a rate of 50hz at a rider speed of 20mph. Sawtooth accomplishes this by inducing small sheet vortices that shed at a low magnitude, but at a higher natural frequency, thus decreasing the laminar bubble effect on the aerodynamically shielded side of the rim’s profile to further reduce high yaw drag and improve crosswind stability.
The industry leading silicon carbide Showstopper brake track continues to evolve and improve, providing unmatched stopping power and modulation regardless of weather conditions or the length of the descent.
Choosing the best tubeless tire for your Zipp road wheels is simple now. See the specific guidelines on selecting a tubeless tire for Zipp road wheels with a hookless rim-tire interface, along with a list of approved tires by make and model: ZIPP's Hookless Tire Compatibility Guide
Included in delivery: rear wheel incl. rim tape, quick release, valve extension
|Product Name:||ZIPP 404 Firecrest Carbon Rear Wheel - Clincher - QR - SRAM XDR - black|
|usage bikesport:||Road Bike, Competition|
|shifting system:||11-speed, 12-speed|
|wheel size:||28" (29") (622mm)|
|axle standard:||Quick Release|
|Wheel / Hub version:||Rear Wheel, Rear Wheel 700-900g, Standard Wheel|
|Freehub Body:||XDR (SRAM 12s Road)|
|braking system:||Rim (Carbon)|
|tire type:||Wire Bead Tire, Folding Tire, Tubeless Ready|
|inner profile width:||19mm|
|rim profile height:||58mm|
|nipples:||Sapim Secure Lock|
|manufacturer item code:||00.1918.522.001|
|Number of Spoke Holes:||24|