Zipp Rear Wheel 303 S Disc Centerlock, TLR - SRAM/Shimano

Zipps 303 S Series Tubeless for disc brakes offers today's cyclists the versatility they demand and the speed they seek. Citing its major victories in the spring classics, these 303 wheels also retain their ideal rim height of 45 mm under all conditions – however, they get a significantly larger internal width to improve the qualities and performance of the wheels in almost every measurable way. Racing bikes are significantly more versatile today than ever before. The 303 S offers a completely new rim profile and design to further enhance the performance of riders on this type of bike. These wheels are made for tubeless use and with disc brakes, allowing the use of wider tires with low air pressure – and that at racing speeds on and off paved roads. The 303 S is one of our lightest wheelsets and optimized for 28 mm tires in terms of best aerodynamics. However, it also handles wide gravel tires up to 50 mm. The 303 S uses design approaches from the higher-end 303 Firecrest Tubeless for disc brakes, making it more efficient and therefore faster. This is achieved by reducing the following factors: air resistance, rolling resistance, fatigue, and weight. The innovation responsible for this is the design of the 303 S series rim. The profile is also 45 mm high as with the predecessor, the 302 for disc brakes. The new rim is 2 mm wider on the outside, namely 27 mm, and the rim bed is a full 7 mm wider at 23 mm. The rim platform is fastest with 28 mm tires. Due to its width, the rim optimizes the tire shape and thus allows for lower air pressure. This helps reduce rolling resistance and makes riding more comfortable. The result of all this is a power saving of 10 watts compared to high-end competitor wheels at 40 km/h on flat roads with 28 mm tires, as internal tests at Zipp showed. These groundbreaking wheels also come with brand new decals that stand out very positively from the peloton – and also at an attractive price.