The 303 S offers an entirely new rim profile and design to optimize rider performance on this new breed of bike. This wheelset is tubeless for disc-brake bikes, allowing the ability to run wide tires at lower pressures for race-ready speed on or off the pavement. The 303 S borrows design concepts from the higher-level 303 Firecrest Tubeless Disc-brake wheelset to gain speed through increased efficiency. That is achieved by creating a wheel with reduced: Wind resistance, rolling resistance, rider fatigue, and weight.The key innovation is in the 303 S Series' rim design. Its 45mm rim depth is the same as its predecessor, the 302 Disc brake. But its rim width is 2mm wider, at 27mm, and its tire bed is a full 7mm wider, at 23mm. That rim platform is designed to be the fastest with a 28mm tire.
The wide rim optimizes tire profile to allow lower tire pressure. That helps to reduce rolling resistance and provides a more compliant ride. The result of all this is a 10 percent watt savings vs.A top peer wheel in total power required to ride 40kph on a smooth flat road with a 28mm tire, according to internal Zipp testing. This groundbreaking wheelset also features all-new cosmetics, setting the rider apart from the pack, and comes at an attractive price. SPEC: SIZE (WHEELS): 700c RIM CONSTRUCTION: Carbon - Hookless TIRE COMPATIBILITY: Tubeless tires only RIM DEPTH: 45mm BRAKE COMPATIBILITY: Disc (Center Lock) RIM - INSIDE WIDTH: 23mm RIM FINISH: UD fiber / Bake-On labels / Matte clear coat RIM PROFILE: Symmetrical WEIGHT (G): 710 Color: Black. Please verify your address during checkout. This item is in the category "Sporting Goods\Cycling\Bicycle Tires, Tubes & Wheels\Wheels & Wheelsets". The seller is "kanosports_usa" and is located in this country: TW. This item can be shipped worldwide.