| | 10 packs crane roller rockers made from high quality alloy steel precision ... die-cast for extreme strength feature needle bearings with seals instead of bushings ... used for pressurized lubrication of the needle bearings without any loss of oil ... pressure roller tip reduces valve stem tip wear and galling to a minimum ... and provides full valve stem tip contact these roller rockers ... cooler which result in a very efficient valve train a must for high performance ... crane made a dimensional change to the needle bearings and shafts these rocker arms ... -83 set of 4 the 1.7 is for a custom valve train set up where a super high lift is ...
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