The Firecrest Carbon Clincher is Zipp's versatile wheelset with its 58mm rim depth and is a classic all-around performer that has carried athletes to victory in every kind of event.
|Wheel Size:||700c (622)|
The 404 Firecrest Carbon Clincher, has been described as the most heavily anticipated wheelset of all time. And following two years of development for its revolutionary rim shape and carbon technology, Zipp are confident that the 404 Firecrest Carbon Clincher lives up to the hype.
|Zipp Firecrest Rim Technology|
|Firecrest - a better wheel in every way|
For every rider, every discipline, and every ability level, aero wheels make a difference. Every test we’ve ever run has confirmed this basic truth and we’ve never seen data from anyone else that argues differently.
With the new Firecrest rim shape in our 404 and 808 Tubulars and Carbon Clinchers, Zipp wheels make a bigger difference in more ways than ever. Not only is Firecrest more aerodynamic than any other rim design, it improves handling in crosswinds, wheel strength, and overall ride quality.
Discovered as we developed our carbon clinchers, Firecrest refocused our thinking from the front to the back of the wheel. Previous rim shapes were designed to smooth airflow coming off the tyre, and tapered inward from the widest point of a toroidal bulge. But Firecrest rims have a less pronounced bulge and maintain a near-constant width almost all the way to the spoke bed.
Without giving up the proven benefits of the toroidal shape, Firecrest is the first aero profile that effectively controls airflow around the back half of the wheel. The performance benefits are substantial. With Firecrest, the latest 404 Tubular (58mm rim depth) matches the aero performance of the pre-Firecrest 808 (81mm depth). And the new 808 Tubular is faster than any competitor’s 90mm rim.
During the design process, we realised that the advanced mathematics and massive computing power that helped us create a faster wheel could also help reduce the impact of crosswinds on handling. Using computational fluid dynamics (CFD), we’ve discovered subtle variations in rim shape that improve stability without increasing aerodynamic drag. By moving the center of pressure – the focal point of side forces on the rim – to its optimal location near the steering axis, Firecrest offers stable, predictable handling at every wind angle. In real-world conditions, Firecrest rims are markedly more stable than other rims of equal or even shallower depth.
As we discovered with designs like the Paris-Roubaix-winning 303, a wider rim increases lateral stiffness for sprinting and cornering yet offers greater vertical compliance for more control, comfort, and durability on rough surfaces. The same holds true for Firecrest rims. In both tubular and clincher versions, the wider design better protects tyres and places more rubber on the road while cornering without adding rolling resistance.
Zipp Cycle Components are the producers of wheels, handlebars, cranks and cycle accessories are a manufacturing company located in Indianapolis, Indiana, USA and are part of the growing SRAM group. Zipp Speed Weaponry serves a select group of elite companies and athletes, globally located and committed to bicycle and wheelchair competition. Zipp meets the customer's needs for the highest performance, superlative quality components through innovative design and manufacturing utilising the best material and technology available. Zipp is built on mutual respect, delivery on promise and fastidious attention to manufacturing details.
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