Note: 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 and premature wear. Sizes are as follows: 909084 Orange (biggest). Repl. 24040-78. 909085 White. Repl. 24041-78. 909090 Yellow. Repl. 24042-78. 909095 Red (average). Repl. 24043-78. 909100 Blue (average). Repl. 24044-78. 909105 Green. Repl. 24045-78. 909106 Black (smallest). Repl. 24046-78.
