Pinning your fork refers to French ID forks by pinning them as to stop the fork legs being pulled away from the forktube as there's no weld there. Bus clamps are pretty much a clamp or stem, found on a bus haha. Some people make ghetto Buff bars with them.
ahhh kool i stilll dont really get the pinned bit though. were do u pin em and shit like that if some 1 could put up a diagram or something that would help allot thnx jarryd m
Theres a pic of a pinned French ID fork. The pin bit is the hollow circle where the Frid logo is above the fork legs. Just need to drill through and pin it.