So this is the Schnitz klr 685 piston kit!!!!!!! In the next few weeks I'll be getting down to business getting the bike torn down and get the cylinder bored & honed. The piston is pretty nice and really looks like a Chevy 400 piston. The main reason for me doing this kit is after 400 plus miles you feel really buzzed from riding the KLR. This piston is 83 grams lighter than stock and should help. Also with the kit is a .010" base gasket that really boosts the compression up.