Jims JIMS, 84-99 billet tappet block set. Polished

Description

JimsJIMS, 84-99 billet tappet block set. Polished  961369

fits  84-99 Evo Big Twin (NU)

Manufactured from billet 7075-T651 aluminum. Can be used as a stock replacement and with valve lifts up to .655″ (at the valve). OEM rocker arm ratio is 1.65:1 in Evo heads. Will clear most small base circle cams with .600″ lift or more. JIMS recommends a minimum roller to block clearance of .035″. For higher lifts a simple clearance modification is required. This set will replace, and is a upgrade, for OEM 18542-83A and 18540-83A.

 

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