IMR MJ rear sprocket for IMR COPA GP 155 (ULTRALIGHT RIMS) MJ Corse MJ.387 €32.12 High quality duraluminium (ergal) rear sprocket for IMR COPA GP 155 (ULTRALIGHT RIMS), with chain pitches 415 and 420 and with number of teeth from 32 to 54. Select the chain pitch and number of teeth you need by clicking below. Add to cart
