Zipp 808 Firecrest Tubular Front Wheel

. Refinements to the shape of the innovative Firecrest rim shape has made this most durable, stable and aerodynamic tubular wheel in the range. Built specifically for track racing, this carbon aero wheel employs an 82mm deep rim to bolster stiffness and ensure you get a comfortable ride on any terrain. A wide rim of 27 5mm also helps increase traction, so you get more speed for the energy you put in Technologically Superior Hub. This Firecrest Tubular Front Wheel features Zipp's brand new 333 hub, designed to withstand all the pressures your ride can throw at you. An innovative approach to flange design eliminates torsional deflection, meaning easier acceleration and more efficient energy consumption, ensuring you get the most out of every pedal Features Hub Model 333 RimTubular Rim Width27 5mm Rim Depth82mm SpokesSapim CX Ray Spoke Count20 Spoke PatternRadial Max Tyre Pressure125psi 8.62bars Dimpled SurfaceYes NipplesSapim Secure Lock Weight860gTechnology 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. Firecrest With the new proprietary Firecrest rim shape in their 202, 303, 404 and 808 Firecrest wheels, Zipp wheels make a bigger difference in more ways than ever. Not only is Firecrest more aerodynamic than any other rim design but it also improves handling in crosswinds and overall ride quality. BuyZipp Wheels & Tyresfrom Chain Reaction Cycles, the Worlds Largest Online Bike Store.