An Upgrade or refresh of wheels for your mountain bike? A new wheelset can completely change the look and feel of your bike for the better.When it\'s time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered.PRODUCT DETAILSOriginal equipment replacement Bontrager Mustang Pro Disc wheels.Double wall alloy rim (24mm outer, 19mm inner width).Rear wheels are convertible between Shimano and SRAM XD freehubs.Does not include skewer, reflector, rim strip, valve, or owner\'s manual.