Click to expand Tap to zoom S&S Drive Gear Oil Pump. 6T for 39-53 Big Twin by S&S Save £-12.39 £199.52 | / SKU MCS504229 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart DescriptionS&S DRIVE GEAR OIL PUMP. 6TDetailsWITH SPLINES. MUST! BE USED WITH 24 TOOTH 73-99 B.T. DRIVEN GEAR 512131 JIMS/512130 NON JIMS39-53 B.T.