piston

As I prepare to upgrade my S1 to R6 forks, I began preparing my fleabay brake calipers by disassembling and cleaning while I wait for the new caliper seals. And as luck would have it, one of the larger pistons has some surface damage: The marks are toward the top of the piston. There is...

Hey everyone, my buddy has a 1982 Yamaha Seca 550. He missed a shift recently and over revved the engine. Piston rings are fried. So we plan on replacing the rings, and a good old honing to clean up the cylinders. The problem is he is going to spend about $130 just for 4 sets of rings. Turns out...