Lightweight casing provides a supple ride quality M:Wall protection helps prevent cuts and reduces the chance of getting pinch flats Tread pattern designed for fast racing on smooth gravel, best in dry conditions. Dynamic:UHP compound improves grip, lowers rolling resistance. Tubeless Complete, and Dual Angle Beads ensure safe retention on XPLR rims Designed to measure 40mm on a Zipp 32mm TSS rim For Use Only With Zipp 622?32 TSS Rims SRAM Model ID: TI-GY-XPSK-A1