1" and 1/2" box tubing, a few bolts, washers, and nuts, some cutting and welding and the Triumph bags bolt right on. Simply remove the passenger pegs and the 1" box tube fits snugly in, run a bolt and nut through. I had made a cross bar that ran up under the tail and bolted up through the under tray but it didn't work with aftermarket exhaust. Without that crossbar I like to run a simple cam lock strap (like a tie down without hooks) around the handles of the boxes and over the seat for stability. I've loaded these bags down numerous times without fail and stability is not affected. They've held up to countless wheelies and have even dragged the ground around corners. That only happened when loaded down though.
