Zipp 303 XPLR S Carbon Tubeless Disc Brake 700c Wheel Big Enough For Your Biggest Gravel Goals Gravel riding can be rough on your bike and components, so you'll want a setup that won't hold you back. A good set of wheels will easily take your riding to the next level so you can reach your gravel goals. The Zipp 303 XPLR S Carbon Wheel is big enough for your biggest gravel goals. Just how big? This wheelset is the fastest on gravel, thanks to its mega-wide rim that integrates seamlessly with approved gravel racing tires. Most gravel wheels are modified versions of existing road wheels, focusing on stiffness and lightweight. Zipp takes a different approach. In gravel, resistance and vibrations from bumpy surfaces create a barrier that slows riders down. To combat this, Zipp applied Total System Efficiency specifically to the challenges of gravel. The wide profile increases air volume, allowing for lower tire pressures. That means you mitigate surface vibrations while maintaining grip when cornering or traction while climbing. The rim profile also creates a seamless transition with gravel tires for unsurpassed aero efficiency on gravel. And while the 303 XPLR S is built big, it's still lightweight to keep you fast and fresh for those long, fulfilling days in the saddle Features Fastest race wheel on gravel that features a tubeless and hookless rim profile Ultra-wide internal profile for decreased rolling resistance and the ability to run pressure under 30 PSI76/176 DB hub with a center locking interface and XDR or SRAM/Shimano driver bodies Applies Zipp's Total System efficiency to high-performance gravel The 303 XPLR S is only compatible with approved tires: The Goodyear XPLR Slick and Goodyear XPLR Inter are specifically designed and optimized for the 303 XPLR SSPECIFICATIONSWheel Size700c Material Carbon Rims Outer Width40mm Inner Width32mm Rim Height54mm Spoke Drilling24HValve Type Presta Tubeless Yes Tire Type Clincher Brake Compatibility Disc (Centerlock)Front Axle12x100mm Rear Axle12x142mm Intended Use Gravel Approximate Weight N/A | Zipp | 303 Xplr S Carbon Tubeless Disc Brake 700C Wheel 12X142 Xdr Cl