Just to update, Brian and Todd were rivals at the time, not collaboraters. The disc brakes were in fact department store Shimano brand.shovelon":1lis5o2k said:Brian Skinner and Todd Schall were collaborating on that design back in the 80s, patterned after a Kawasaki motorcycle design. I worked with Todd on his all aluminum version that he still has in the back of the garage. Todd had Works Performance build a custom shock for it. Both bikes did the Kamakazi runs in Mammoth in the early days. We talked just last week about retrofitting a modern air shock to it.
The rear brake is a Schwinn disc.