The 303 has been completely redesigned with Firecrest� shaping. The Carbon Clincher preserves the aerodynamic advantages of its tubular brother while adding the convenience of a clincher tire. And at just 1540g it�s light enough to climb up the steepest gradients with ease.
All of the hallmark characteristics of the 303 have improved with the Firecrest Carbon Clincher. The Firecrest shaping optimizes the aerodynamic profile of both the front half and the back half of the wheel. In addition 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. It�s faster simpler and more stable. Or as Zipp technical director Josh Poertner puts it Firecrest is �lightning in a bottle.
Specification
�Weight: 855g
�Hub Used: 188/V9
�Rim Depth: 45mm
�Brake Track Width (center): 26.40mm
�Max Width: 28.50mm
�Clincher Bead Width: 17.25mm
�Spoke Count: 24
�Spoke Length Non-Drive: 264mm
�Spoke Pattern Non-Drive: 2 cross
�Spoke Pattern Drive: 2 cross
�Spoke Length Drive: 262mm
�Max Tire Pressure: 125psi
�Max Tire Pressure: 8.62 bars
�11-speed compatible hub: Yes
�Track Adaptable: No
�Dimpled Surface: Yes
�Ceramic Bearing: Aftermarket
�External Nipples: Yes