When it comes time to break free from the pack and forge your own way to the finish, you're going to want a set of Zipp's 808s underneath you. These wind-cheaters take fast to a whole new level with 81mm-deep, dimpled, full-carbon rims that boast world-class aerodynamics at a weight that still lets you attack the hills with voracity. The Firecrest rim shape improves handling in crosswinds, ups the wheel's strength and enhances ride quality, while a special resin mixed in the carbon boosts stopping power and prevents overheating on long descents. And, these top-notch rims are laced to Zipp's precision hubs that boast some of the roundest ball bearings in the industry for maximum speed that's sure to put you at the front of the pack. Strike fear into the hearts of your competitors with the 808s.
Zipp’s amazing Firecrest rim is more aerodynamic than any other, plus it improves handling in crosswinds, wheel strength, and overall ride quality. Here’s how:
Previous rim shapes were designed to smooth airflow coming off the tire, and tapered inward from the widest point of a toroidal bulge. Zipp’s 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.
Using computational fluid dynamics (CFD), Zipp 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 rims offer 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.
More control, comfort and strength, too
Firecrest rims are also wider, which increases lateral stiffness for sprinting and cornering, and offers greater vertical compliance for more control, comfort, and durability, without adding rolling resistance.
Carbon fiber is renowned for its outstanding stiffness, vibration-damping ride quality and out-of-this-world lightness. However, it does not have as much impact resistance as aluminum. Zipp solves this issue and furthers their reputation for making some of the world's best functioning wheels with their Carbon Bridge technology. Kevlar threads woven through the carbon in the prime impact zones boost the rim's impact strength by an outstanding 28%. Carbon Bridge technology means you can ride your Zipps for years to come over the roughest roads with the confidence that you have some of the fastest and strongest wheels going.
Zipp's Visco-elastic Constrained Layer Control improves ride quality by inserting a vibration-damping material between layers of structural carbon, reducing road vibration by up to 10% and giving you a ride that is both blazingly fast and decadently smooth.
Tubular (sew-up) tires required
|Rim Material||Carbon, 81mm-deep, 27.5mm wide|
|Weight (Front/Rear)||725 grams|