ZIPP 303S carbon wheelset - tubeless - centerlock - Shimano/SRAM 10/11-speed

ZIPP 303 S Performance wheelset for the small budget - Hookless Tubeless

Zipp's 303 S Series Tubeless for Disc Brakes gives today's cyclists the versatility they demand and the speed they seek. Drawing on its big victories in the spring classics, these 303 wheels also retain their ideal rim height of 45 mm in all conditions - but they get a significantly larger internal width to improve the qualities and running properties of the wheels in almost every measurable way. Racing bikes are much more versatile today than ever before. The 303 S offers a completely new rim profile and design to further increase the performance of drivers on this type of wheel. These wheels are made for tubeless use and with disc brakes, allowing the use of wide tires with low air pressure - at racing speeds on and off paved roads.

The 303 S is one of our lightest wheels and optimized for 28 mm tires for the best aerodynamics. But it can also handle wide gravel tires up to 50 mm. The 303 S uses design approaches from the higher quality 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 like its predecessor, the 302 for disc brakes. The new rim is 2 mm wider on the outside, namely 27 mm, and the rim base is a full 7 mm wider at 23 mm. The rim platform is fastest with 28mm tires. Due to its width, the rim optimizes the tire shape and thus allows lower air pressure. This helps reduce rolling resistance and makes driving more comfortable. The result of all this is a power saving of 10 watts compared to top-of-the-range competitive wheels at 40 km/h on flat roads with 28 mm tires, according to internal tests at Zipp. These groundbreaking wheels also come with brand new decals that stand out very positively from the peloton - and at an attractive price too.

77D hub

• Maintenance-free bearings - no preload adjustment necessary
• improved bearing seals
• Thru axles compatible - 12mm end caps included - replaceable without tools
• ZIPP's own flange geometry and spoke hole circle specially tailored to Sapim® CX-Sprint® spokes for optimized torsional and lateral stiffness
• internal 17 mm axle

The new Zipp logo and graphics scream speed
Only for tubeless tires
Fastest with 28mm tires, but also suitable for wide gravel tires
76/176 DB hubs with Centerlock mount
Optional with XDR freewheel
The wide rim design allows low tire pressure, especially when mounted tubeless. The tire's larger contact area increases traction, cornering speed and handling in wet conditions
Tires with larger volume and lower pressure provide more comfortable and low-vibration driving
Wide tires with low pressure save measurable watts
Wide, hookless rims form a seamless connection with the tire, minimizing air resistance