The completely new, extra aggressive XC profile paired with the versatile Addix Speedgrip compound makes Racing Ray a XC weapon and an ingenious addition to Racing Ralph. FEATURES: Shifted center blocks enable precise steering and high braking traction. Stable shoulder blocks for precise steering. Very quiet rolling characteristic with excellent rolling resistance. SPECS: Labeled Size: 29 x 2.25 Color: Black ISO Width (mm): 57 Flat Protection: Sidewall ISO Diameter: 622 / Road / 29" Tire Intended Use: Mountain Tire Type: Tubeless Ready Clincher Tire Bead: Folding Tire Diameter: 29"