Designed for the commuter, tourist, and fitness cyclist, the Topeak MTX Explorer Rear Rack features our patented QuickTrack system. The Quicktrack mounting system integrates seamlessly with our popular trunk bags and rear basket. Just slide the bag or basket into the track and it's locked in place and ready to go. The tubular aluminum rack is disc brake compatible and its solid design also acts as a rear fender. Tubular Aluminum is extremely strong and light weight. Compatible with bikes with disc brakes. Attachments: Braze On Type Bike must have threaded holes on top and bottom of the seat stay in order to use this rack. Size L x W x H: 34.5 x 23.5 x 41 cm 13.6 x 9.3 x 16.1 All mounting hardware included.