box came with the bike, Givi boxes on the OEM rails, but the top box has one of the brackets from Cymarc to move it back, and it give the pillion about 8cm more room backwards and meant I wasn't sitting on the top of the tank when 2up
well worth the money, but buy some Givi mushroom spacers/lugs (for wingracks) for the old holes in the rack and for spacing the tox from the rack- the Suzuki ones perish and may not come out in one piece.