Zipp 303 Firecrest Carbon Road Front Wheel 2019

Zipp 303 Firecrest Carbon Road Front Wheel. Packed to the brim with Zipp's innovative technologies, this 303 all carbon front wheel is lightweight, responsive and a perfect fit for riders of any skill level. The deep 45mm clincher rim offers excellent aerodynamics, balanced by the SawTooth ABLC rim texture that gives this wheel extra stability even in tough crosswinds. ShowStopper technology in the rim brake ensures this wheel works with your rim brakes rather than against, and means added durability for both the rim and the brakes Fully Optimised Hub. This front wheel comes with Zipp's 77 hub, which optimises the included Sapim CX Sprint spokes for a great power transfer and remarkable torsional stiffness, meaning your ride stays smooth and fast for longer. Features Hub Model77 RimClincher Rim Width26 4mm Rim Depth45mm Brake Track Width26 4mm SpokesSapim CX Sprint Spoke Hole Count24 Hole Spoke PatternRadial Max Tyre Pressure125psi 8.62bars Dimpled SurfaceABLC SawTooth NipplesSapim Secure Lock Weight645g frontTechnology ShowstopperShowstopper is a complimenting pairing of a directional, moulded in, texture with silicon carbide particles suspended in the surface resin. The current media blast process applied to all Zipp rims increases the surface roughness of the brake track providing the rider with consistent and responsive braking. In order to improve this for the wettest of rides, Zipp has introduced a moulded in groove specifically tuned for the Zipp Tangente Platinum Pro EVO Brake Pad. The grooves have been optimized to interact with the leading edge relative to the rotation of the wheel of the brake pad and the four cooling channels. The leading edge of the pad and first two channels efficiently wipe water and debris outward, cleaning and drying the braking surface, while the second two cooling channels have maximum interference with the grooves allowing greater braking force than a smooth rim. The cleaning effects of the groove and pad interaction improve brake feel and consistency even in dry conditions. Hexfin Aerodynamic Boundary Layer Control ABLCThe 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 rims profile to further reduce high yaw drag and improve crosswind stability. SawToothThe name given to the Zipp NSW variable depth 5358mm rim profile. This design is the result of rigorous wind tunnel and real world testing. The rim shape takes natures elegant design solutions and combines their precise engineering finesse to deliver a wheel that performs like nothing else before. FirecrestA unique to Zipp rim profile that provides more aerodynamic finesse than any other rim design. It also improves handling in crosswinds significantly and increases the ride quality enormously BuyZipp Wheels & Tyresfrom Chain Reaction Cycles, the Worlds Largest Online Bike Store.