The Front Wheel Specialist:- 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 resistanceSpecifications:- Size: 57-622 (29 x 2.25)- Performance: Super Ground, TLE- Compound: Addix Speedgrip