JT Rear Sprocket 40 Tooth 520 Pitch JTR845.40 For Yamaha SR 250 21L 1983
JT Rear Sprocket 40 Tooth 520 Pitch JTR845.40. Yamaha SR 250 21L 1983. Sprockets are an important component of a motorcycle's drive system, responsible for transmitting power from the engine to the rear wheel via the chain.