Zipp 303 Firecrest Clincher 11 Speed Wheels
The Zipp 303 Firecrest wheels are tried and tested in the harshest race conditions, the 45mm deep rims offer aero dynamic advantages on the flat whilst being light enough to climb. Zipp have added four times more dimples over previous models for even better aerodynamics.
The 303 has emerged as one of the most formidable wheels in the pro peloton, with wins in the Tour de France, Paris-Roubaix, the Tour of Flanders and more. Its speed, light weight, and utter reliability have been proven in pro cycling’s most demanding races. The 303 features Zipp's Firecrest shaping, offering aerodynamics of a tubular in a clincher wheel. Firecrest moves the center of pressure of the wheel backwards, giving the 45 mm-deep rim the crosswind stability a box-section rim. At the same time, the 26.4 mm-wide brake track (at center) allows the clincher tire to take on a wider, more stable shape without compromising rolling resistance, and at 1475g for the wheelset it is light enough to climb the steepest gradients.
Zipp have updated their hub technology and it removes the need for any maintenance and improves bearing protection. Keeping things even simpler is the fact that no pre-load adjustment is required. Another benefit of the hubs is the flange geometry and spoke hole attachment pattern to provide the perfect levels of torsional and lateral stiffness and robustness.