The Bontrager AT-550 26in Disc MTB Wheel is a genuine replacement part. A practical wheel that won't break the bank.Bontrager AT-550 26in Disc MTB Wheel FeaturesTrek Mountain 26in WheelsBontrager AT-550 single wall, non-eyeletted rimsDoes not include skewer, reflector, rim strip, valve, or owner's manualBontrager AT-550 26in Disc MTB Wheel SpecificationsSizeFront, Not applicableRear, Shimano 7-speedFT/RRFrontRearDiameter26"26"TypeClincherClincherCassette compatibilityNot applicableShimano 7-speedHub width100 mm135 mmHoles3636Butting1414Cross sectionRoundRoundBrake type6-bolt disc6-bolt discAttachmentQuick releaseQuick releaseNipple locking typeBrassBrassValveSchraderSchraderWeight--75g