Zipp 202 NSW Full Carbon Clincher Front Wheel

. The fastest, most agile and lightest full carbon front wheel that Zipp has ever constructed, the 202 NSW Full Carbon offers all this without sacrificing durability and style. Featuring market leading aerodynamics and braking performance the 202 NSW also raises the bar for efficiency and stability. This fast climbing, exceptionally durable tour level wheel provides exceptional stability, handling and power transfer in all conditions Features MaterialRim Carbon; Hub Aluminium Hub ModelCognition Rim Model Zipp X32NSW Rim Depth 32mm Rim Outer Width 25 4mm Rim Inner Width 16 25mm Rim TypeCarbon Tubular SpokesSapim CX Ray J Bend, 18H, Radial Spoke Nipples Sapim Secure lock Max Tyre Pressure125psi Dimpled SurfaceABLC, SawTooth Weight615gTechnologies. Cognition The ultimate in Zipp hub technology. Every time a conventional hub set starts to coast, friction within the freehub ratchet mechanism works like a drum brake to slow the rider down. The drag between hub shell and driver body during coasting is considered as efficiency loss, especially for road wheels. High drag also can significantly contribute to chain dropping issues. The drag torque drives the cassette clockwise so the chain gets loose on the load side. The solution The rear Cognition hub with AxialClutch technology reduces drag by disengaging the ratchet mechanism when coasting. It then uses magnets to re engage once the rider starts pedalling Showstopper Showstopper 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 have introduced a moulded in groove specifically tuned for the Zipp Tangente Platinum Pro EVO Brake Pad. The grooves have been optimized to interact with 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 ABLC The 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 Buy Zipp Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.