motorcycle chains 420 1) material:40MN 2) pitch:12.7mm 3) plate thickness: ... (9.525-50.8mm pitches)2)motorcycle chains :415,415H,420,420H,428,428H,520,520H,6303)short pitch conveyor roller ... .169.422.215226.629.765063019.0511.9112.5724182.43537800 40Mn 420 motorcycle drive chains