The 303 brings a lot to the table, including heritage proven in the worlds hardest races. At the center of the wheelset is Zipps 77/177 hubset, which results in improved stiffness, durability, simplicity and versatility. The carbon wheel that helped pioneer the Firecrest rim platform for improved aerodynamics and crosswind stability also features the unspoken durability that has repeatedly won Paris Roubaix and the Tour of Flanders.

• Firecrest rim technology affords the rider more speed, more stability, and more strength. This technology offers stable, predictable handling, and the wider rim increases lateral stiffness while offering greater vertical compliance
• Rim Width (Internal): 21
• Defined Color: Black
• Rear Axle: 12mm Thru x 135mm
• Rear Axle: 12mm Thru x 142mm
• Rear Axle: QR x 135mm
• Wheel Size: 650b
• ISO Diameter: 584 / 650b / 27.5″
• Tire Type: Tubeless Ready Clincher
• Hub/Brake Compatibility: 6-Bolt Disc
• Cassette Body Type: Shimano/SRAM 11 Speed Road