Zipp 404 Firecrest Carbon Road Front Wheel 2019

Zipp 404 Firecrest Carbon Road Front Wheel. This Zipp's 404 Firecrest front wheel is the perfect fit for those who require excellent speed performance and the stability necessary to make the best of it. With a deep 58mm rim profile, this wheel offers incredible aerodynamics that has been proven in all conditions. Plus, with SawTooth ABLC rim surface dimpling, this front wheel maintains excellent crosswind stability Race Winning Hub. Firecrest have been a pro favourite for nearly three decades, and at the centre of each modern success is Zipp's 77 hub. With no pre adjustment needed, these hubs offer exceptional durability, rolling efficiency and bearing life, ensuring this front wheel becomes a hassle free addition to your ride Features Hub Model77 Brake StandardRim Brake specific RimCarbon Clincher Rim Depth58mm Rim Width 25mm SpokesSapim CX Sprint Spoke Hole Count18 Hole Weight710g frontTechnology 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. Carbon BridgeAdding Kevlar, stitched into a 6 bundle co axial thread and placing this at the rim edge allows Zipp to capstone the top of each outside diameter bridge, providing an improved way to distribute impact forces. This gives from 28% to as much as 50% improvements in impact depending on the rim type and allows Zipp to increase the lateral stiffness with a minimal weight penalty. Visco Elastic Constrained Layer Control VCLCUsing a vibration absorbing material that is compressed between layers of solid carbon laminate on the rim surface. This technology means that when the rim received an impact from the road, a lot of the shock is absorbed by the VCLC system, resulting in a 10% reduction in road vibration. Wire EDMElectron Discharge Machining allows Zipp to precisely remove internal material from the rear hub after they have been heat treated. This removes any abnormality that can sometimes occur during the heat treating process, resulting in a perfectly finished hub shell BuyZipp Wheels & Tyresfrom Chain Reaction Cycles, the World's Largest Online Bike Store.