I finally replaced the SS bicycle chains on my Stiletto Bobber with KMC H410 BMX chains. I have a primary drive chain from the engine to the jackshaft, and a main drive chain from the right side of the jackshaft to the wheel. The new chains fit the sprockets much better due to the larger rollers, and there is less movement in the chain while I'm riding. I can't imagine these KMC
chains will ever wear out on an MB, unlike my kit 415 chains that started cracking from continued use.