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BIG TWIN STARTER PINION SLEEVE
This category groups the starter pinion bushes designed for Harley-Davidson Big Twin engines. The starter pinion bush is a critical primary component that allows the pinion to rotate freely when the engine is running, while transmitting the starter motor’s torque during ignition.
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Zodiac (Genuine Zodiac Products)Big Twin starter sprocket bushing
Primary shaft starter pinion bush, for all Big Twins with pedal start and 4-speed, from 1950 to 1985…
About this category
It includes bushes, sleeves, and plain bearings compatible with Evolution, Twin Cam, and Milwaukee Eight primary cases. Essential parts for primary transmission repairs, preventing wear on the pinion and housing. Technical replacements to maintain precise operation of the starting system on large-displacement motorcycles.