SHIMANO XTR HB-M9110 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 a part of Shimano's newest generation of XTR components. It is compatible with center lock rotors and has either 15 x 100mm or 15 x 110mm Boost hub spacing. At approximately 134g, this will be your favorite part of your dream wheelset. Features Compatible with center lock rotors100mm or 110mm hub spacing Uses a 15mm E-thru axle J-Bend spoke design28 or 32 hole options Labyrinth & Contact Seals | Shimano | Xtr Hb-M9110 J-Bend Front Hub 15X100Mm, 28 Hole