Primary Chain ~ Yamaha OEM 23131-426-003

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The primary chain drives the clutch and gearbox off the crankshaft. As it stretches and wears you get rattle, slack, and eventually poor drive. A fresh primary chain restores quiet , positive transmission of power. Inspect the tensioner and guides at the same time. Replaces OEM #23131-426-003 Quiet, positive primary drive Cures rattle and slack from a worn chain Check the tensioner and guides too Show more