Fits 26\", 27.5\"(650B) & 700c wheels w/discsOur toughest tubular aluminum rear rack designed for heavy-duty, long distance touring. Specifically developed for bikes equipped with disc brakes. Integrated side bar gives a lower pannier attachment point– allowing more space for cargo on the rack top. QuickTrack™ compatible for use with any MTX TrunkBag, rear basket and pannier bag.AttachmentsBraze-On Type.Material 6061 T-6 Hollow Aluminum.Bag CompatibilityMTX QuickTrack™ System.Max. Weight Capacity25 kgs / 55 lbs.Added FeaturesSolid Fender Top,RedLite Mount,Tail Light Mount,Side Bar for Side Pannier.Size (L x W x H)34 x 23.5 x 41 cm,13.4” x 9.3” 16.1”.Weight739 g / 1.63 lbs.