Rear Disc RackDescription Surly's burly line of tubular Chromoly steel racks have been used on expeditions all over this planet for years. This version here is for use with seatstay mounted disc brakes. Surly offer it in two versions: standard and wide. Both feature the same stainless steel mounting hardware (handily housed in a reusable Surly Tool Bag), but they feature different widths to work with various tire sizes. Theyre both height adjustable and can fit a