Click to expand Tap to zoom PBI Cnc Transmission Sprocket. 21T for 91-92 5-Speed XL by PBI Save £-28.51 £75.21 | / SKU MCS930010 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart DescriptionPBI CNC transmission sprocket. 21TDetailsCNC machined; 8620 alloy steel; Heat treated; Nickel plated; USA made; OEM 21t replacement (37709-89) Note: Also fits 92-03 Sportster models when converted to rear chain drive91-92 5-speed XL