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Twin Power 65-85 Big Twin With Chain 4 Speed Starter Shaft Gear Replaces H-D 31485-65
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Twin Power™ starter shaft gear replaces H-D 31485-65, restoring positive chain-drive engagement for reliable cranking on 1965-1985 4-speed Big Twin Harleys
- Essential for starter rebuilds, eliminating stripped gear failures during hot starts
- High-strength steel gear withstands heavy kickback and high-compression loads
- Direct OEM replacement fits chain-driven starters on Shovelhead transmissions
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