{"product_id":"zipp-303-s-carbon-tubeless-rear-bicycle-wheel","title":"Zipp 303 S Carbon Tubeless Rear Bicycle Wheel","description":"\u003cp\u003eThe Zipp 303 S Carbon Rear Wheel is a \u003cstrong\u003etubeless-ready\u003c\/strong\u003e road wheel built for riders who want the aerodynamic benefit of a deep-section carbon rim without the price of Zipp's flagship 303 Firecrest line. It carries a \u003cstrong\u003e45mm rim depth and 27mm width (23mm internal)\u003c\/strong\u003e, a rim shape borrowed directly from the Firecrest design and tuned to optimize tire profile at lower pressures. Running wider tires at lower pressure reduces rolling resistance and takes the edge off road vibration, which matters most on long endurance rides and mixed-surface routes.\u003c\/p\u003e\n\u003cp\u003eThis listing is the \u003cstrong\u003erear wheel only\u003c\/strong\u003e, built around a 176D hub with a \u003cstrong\u003eCenter-Lock disc\u003c\/strong\u003e mount and a \u003cstrong\u003e12mm thru-axle at 142mm spacing\u003c\/strong\u003e — the axle standard on nearly every current disc-brake road and gravel frame. The rim is \u003cstrong\u003eUD carbon and hookless\u003c\/strong\u003e, so it's compatible with tubeless tires exclusively; standard clincher tires with tubes are not supported. The freehub body is set up for \u003cstrong\u003eSRAM 10 or 11-speed\u003c\/strong\u003e cassettes, making this a direct fit for SRAM-equipped bikes looking for a carbon upgrade over stock alloy wheels.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRiders on \u003cstrong\u003eSRAM 10- or 11-speed drivetrains\u003c\/strong\u003e upgrading from an aluminum wheel to carbon\u003c\/li\u003e\n\u003cli\u003eRiders who want \u003cstrong\u003etubeless tire compatibility\u003c\/strong\u003e for lower rolling resistance and better flat protection\u003c\/li\u003e\n\u003cli\u003eRiders with disc-brake frames using \u003cstrong\u003e12x142mm thru-axles and Center-Lock rotors\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConsider a different wheel if you run \u003cstrong\u003erim brakes\u003c\/strong\u003e, a Shimano or Campagnolo freehub, or need a front wheel — this listing covers the rear wheel only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat to Look For\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm your frame's rear axle is \u003cstrong\u003e12x142mm thru-axle\u003c\/strong\u003e with \u003cstrong\u003eCenter-Lock\u003c\/strong\u003e disc mounts before ordering\u003c\/li\u003e\n\u003cli\u003eThe rim is \u003cstrong\u003ehookless\u003c\/strong\u003e, so you're committed to \u003cstrong\u003etubeless-specific tires\u003c\/strong\u003e — check your current tires' tubeless compatibility first\u003c\/li\u003e\n\u003cli\u003eMatch the freehub to your drivetrain: this wheel is built for \u003cstrong\u003eSRAM 10\/11-speed\u003c\/strong\u003e only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eRim:\u003c\/strong\u003e The \u003cstrong\u003eUD Carbon Hookless Rim\u003c\/strong\u003e runs a \u003cstrong\u003e45mm depth\u003c\/strong\u003e and \u003cstrong\u003e23mm internal \/ 27mm external width\u003c\/strong\u003e, adapted from the 303 Firecrest. That shape lets you run wider tires at lower pressure, which lowers rolling resistance and improves ride comfort on rough pavement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHub:\u003c\/strong\u003e A \u003cstrong\u003e176D hub\u003c\/strong\u003e with a \u003cstrong\u003eCenter-Lock disc mount\u003c\/strong\u003e and smooth matte finish, set up with a \u003cstrong\u003ePresta valve\u003c\/strong\u003e for tubeless setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTire compatibility:\u003c\/strong\u003e Listed as \u003cstrong\u003eTubeless Ready\u003c\/strong\u003e with a hookless bead, this wheel takes \u003cstrong\u003etubeless tires only\u003c\/strong\u003e — tube-type clinchers are not compatible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFreehub:\u003c\/strong\u003e Built for \u003cstrong\u003eSRAM 10\/11-speed\u003c\/strong\u003e cassettes, making it a direct swap for SRAM-equipped disc-brake road or gravel bikes.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eRider Intent Summary\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiggest strength:\u003c\/strong\u003e 303 Firecrest-derived rim shape (45mm depth, tubeless-ready) at a more accessible price point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTradeoff:\u003c\/strong\u003e hookless rim limits tire choice to tubeless-specific tires; sold as a rear wheel only with a SRAM-only freehub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat makes it different:\u003c\/strong\u003e brings Zipp's higher-tier aero rim design down to a wheel built around a 176D hub and Center-Lock disc mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eVictory's Take\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eWe see the 303 S as a smart entry point into Zipp's aero rim technology for SRAM riders who want the 303 Firecrest's rim shape without the Firecrest price. At Victory Bicycle Studio, we'd pair it with a quality tubeless tire from the start to get the ride quality this rim is designed for.\u003c\/p\u003e","brand":"ZIPP","offers":[{"title":"Black \/ Sram-10\/11Speed","offer_id":53595641217331,"sku":"00.1918.528.000","price":727.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/3685\/0739\/files\/Zipp303SCarbonRearWheel-700-sram-10-11-speed-black-1.jpg?v=1782934620","url":"https:\/\/victorybicyclestudio.com\/products\/zipp-303-s-carbon-tubeless-rear-bicycle-wheel","provider":"Victory Bicycle Studio","version":"1.0","type":"link"}