What Our Gearhead(R) Experts Are Saying: "I upgraded to the DEORE XT HB-M8210-B on my trail bike and the difference was immediate. It rolls super smooth thanks to the cartridge bearings and I love that it's easy to service when needed. The Boost spacing makes a big difference for front-end stiffness and tracking." When we're building up a reliable front end, we look to the Shimano DEORE XT Front Hub HB-M8210-B to handle the miles and the abuse. Built with steel cartridge bearings and optimized seal designs, this hub keeps our ride rolling smooth through weather, grit, and big hits. Designed with pre-load adjustability and a Boost 110x15 configuration, it delivers increased stiffness and control for modern trail setups. Whether we're lacing up a 28h or 32h wheel, the HB-M8210-B keeps our front end precise and dialed, season after season.