S&S, pinion gear L77-89. Blue - L77-89 B.T.(NU) (AVERAGE) 515239 In chrome or black oxide

In chrome or black oxide finish

Heavy-Duty extra thick wall design

Note 2: See 537478 for matching passenger seat

Available in chrome and black anodized

both with black tips

S&S, pinion gear L77-89. Blue - L77-89 B.T.(NU) (AVERAGE) 515239 In chrome or black oxideNote: 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. When in doubt use a gear from the middle to the small side of the range. A combination of smaller gears should provide adequate gear clearance under most circumstances. Both excessive and zero gear lash combinations cause engine noise, but no gear lash causes binding