Starter Jackshaft Assembly with 9 Tooth Pinion Gear For OEM 66 Tooth Starter Ring. Fits Big Twin Models 1989-1993. - All Balls Racing

* Replaces OEM # 31342-90

* Replaces OEM # 33127-90A

* Replaces OEM # 60647-90A

Improved performance at a lower cost. One piece design eliminates the need for inner primary bearing support which reduces the occurrences of binding and delivers more power to the primary. Delivers more Torque

More tolerant of misalignment

Available in 9 tooth (large gear) and 10 tooth (small gear) versions

Available as a 9 tooth conversion for use on bikes that originally came with a 10 tooth gear (66 tooth ring gear is necessary for conversion)

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