SHIMANO XTR HB-M9110 Boost FRONT HUBShimano XTR series components appeal to the rider that is in search of the most advanced mountain bike components and wheels to date. Hubs are important when it comes to how smoothly a wheel rolls. The Shimano XTR HB-M9110 Front Hub is apart of Shimano's newest generation of XTR components. It is compatible with center lock rotors and has a 15 x 110mm hub spacing. At 134g, this will be your favorite part of your dream wheelset. Features Compatible with center lock rotors110mm hub spacing Uses a 15mm E-thru axle J-Bend spoke design28 or 32 hole options Labyrinth & Contact Seals | Shimano | Xtr Hb-M9110-B J-Bend Front Hub 15X110Mm, 28 Hole, J-Bend