The Surly Rear Disc Rack is made of tubular CroMoly steel and is specifically designed to fit frames with seatstay-mounted disc brakes like the Straggler (650b and 700c) Krampus and Karate Monkey.Tubular CroMoly rack stainless-steel hardwareHeight-adjustable to accommodate 26-29" wheelsHardware housed in reusable Surly Tool BagNOTE: The following "RK" part numbers will not be compatible with the new Rear Disc Racks: RK013 RK0121 RK0134
