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Zipp 303 S Carbon Tubeless 700c Rear Wheel - SRAM XDR model-ventanacustomhardtail Specialized S-Works Shiv Module Medium303 S Tubeless wheels provide todays cyclists the versatility they demand with the speed they crave. A key innovation in the 303 S Series is the ideal for every terrain rim design, featuring a 45mm rim depth and a 27mm width, designed to optimize tire profiles at lower tire pressures. That helps to reduce rolling resistance and provides a more compliant ride. The 303 S borrows design concepts from the higher level 303 Firecrest Tubeless wheels to gain