Click to expand Tap to zoom PBI Cnc Transmission Sprocket. 23T for 36-79 4-Speed Big Twin by PBI Save £-12.66 £57.11 | / SKU MCS930016 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart DescriptionPBI CNC transmission sprocket. 23TDetailsCNC machined; 8620 alloy steel; Heat treated; Nickel plated36-79 4-speed B.T.