Evolution Industries
Evolution Industries, chain tensioner bump stop
Evolution Industries, chain tensioner bump stop
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Steel. For OEM 30-46 drive ratio. Over tension is an issue with the OEM automatic primary chain tensioner. Unnecessary stresses on the chain; sprockets and bearings can cause premature failure. This steel ''Bump Stop'' blocks the OEM automatic chain ratcheting system; thus preventing it from ratcheting too far. Adjustments are simply made by grinding material away from the bump stop''s grooved wear marks. Primary chain adjustments can be made together with every 5000 mile primary oil change. Incl. Installation instructions. Permanent modifications are not required.
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