Click to expand Tap to zoom Jim's, Nut. Pinion Shaft Gear for 54-89 Big Twin by Jim's Save £-0.42 £21.47 | / SKU MCS978263 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart DescriptionJIMS, nut. Pinion shaft gearDetails5/8-24. Left hand threaded. Repl. 24023-54. Note: Use 513750 JIMS tool for removing & installing nut.54-89 B.T.