Click to expand Tap to zoom S&S Pinion Gear, Black for 39-53 Big Twin by S&S Currently unavailable £249.72 | / SKU MCS909083 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Currently unavailable DescriptionS&S, pinion gear 39-53. BlackDetailsNote: All S&S pinion shaft gears are designed to be used with a 73-99 B.T. style 24T driven gear (OEM 26345-73 / MCS 531209 S&S). Color coding sequence is identical to stock H-D coding.39-53 B.T.