WARNING to anyone with an aftermarket torque arm
A friend of mine, on a K12S, who was on our ride Sunday, had installed an aftermarket torque arm (link). Someone was watching over him because, on a very rural, isolated road, doing triple digit speed, the rear mounting bolt for the arm backed completely out, separating the arm from the drive housing. The rear drive pinion shaft spline end pulled out of the U-joint, and did a pretty good job of ripping up the drive shaft components, including the housing/swingarm. He claimed he didn't use a threadlocker or a specific torque value on the mounting bolts. He admitted how stupid that was, and was quite pissed at himself.
He is lucky the bike didn't lock up. Would have been ugly.
PLEASE CHECK THE FASTENERS!!