Jims High Peformance Roller Rocker Arms For Harley 1984-2013

Jims High Performance Roller Rocker Arms

Features:

• Stock Ratio 1.625:1
• Designed to reduce friction in the valve train and provide more horsepower with less heat in the top end
• Cast from 4340 chromoly steel and heat treated
• JIMS roller rockers feature a 660 bronze bushing fit to .007"-.0012" for the best wear resistance and oil control
• With a roller tip made from bearing grade material which reduces valve guide wear and valve tip galling
• Other features include a segmented parabolic pushrod cup which reduces friction at pushrod ends and also puts the load on the outer perimeter of pushrod ends
• Replaces OEM 17360-83 A and 17375-83 A
• Made in the USA