Yea the back side bolt is what I was asking about, and is 8mm, and I was going to modify an allen wrench to fit back there, but the first person that responded made me realize I can take the rearset (i think thats what it is called) off to get back there6mm. Had mine rattle loose up the road about 60mi. There's a 6mm allen in the toolkit that got me back home ok. Did the blue Locktite when I got back. Had to take the rearset off w/peg. 2 bolts on outside. The peg is fastened from the back side where you can't get at it directly.