Rear Boostinator kits are not approved for rotors larger than 183mm

with a hollow taper scandium enriched steel axle and spinning on a sealed outboard IGUS bushing

QR lever pivots on a brass seat for durability

32T-38T chainring compatible

With comfort

Shimano SH-XC300 SPD Shoes - EU 46 - Black - E Wide Fit algolia-ignore Rear Boostinator kits are notIf you're after a high performance XC racing shoe with advanced fit and pedalling technology then look no further. The Shimano SH XC3 SPD Shoes feature a seamless midsole and upper construction for a close fitting, glove like fit, exceptional stability, and lightweight performance. The BOA L6 adjustment system provides a sleek profile and lightning fast adjustment. The lightweight glass fibre reinforced nylon sole has a low stack height to help