Shimano MT500 Front Boost MTB WheelThis front mountain bike wheel features a wide alloy rim for an easy climbing advantage on the trail. This wheel features boost-sized hub spacing for extra-stiff handling over rough terrain. Plus, disc-brake compatibility ensures you have consistent braking power, even in harsh conditions. Features: Rim Type: Alloy Clincher Rim Height: 21mm Rim Width: 24mm (inner), 29.6mm (external) Brake Type: Disc Brake (Centre Lock) Spokes: 24 Axle Type: 15mm E-Thru Hub Spacing: 110 x 15mm Weight: 988gBuy Shimano Wheels & Tyres from Chain Reaction Cycles, the World’s Largest Online Bike Store.