Zipp 303 XPLR SW Rear Wheel - 700 12 x 142mm Center-Lock Carbon Black XDR 24H A1. The 303 XPLR SW is big enough for your biggest gravel goals. Super-fast on gravel thanks to its mega-wide rim profile and utilizes Zipp’s Total System Efficiency specifically to the challenges of gravel. The wide profile increases air volume allowing for lower tire pressures without squirm. That means riders can 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 SW is built big it’s still lightweight to keep you fast and fresh for those long fulfilling days in the saddle.

UD Carbon fiber with ABLC surface Dimples tubeless and hookless rim construction: 32mm width and 54mm depth profile

Wide and deep profile integrates seamlessly with gravel tires to increase aerodynamic efficiency

CX-Ray spokes with aluminum nipples carbon steel cartridge bearings

Applies Zipp’s Total System Efficiency to high-performance gravel

ZR1 Center-Lock disc hub with better seal design for improved durability and 6 pawls with compression springs for 66 points of responsive engagement

Designed for Zipp approved compatible tires only

Max tire pressure 50 psi with the ability to run pressures under 30 psi