- 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 reuces 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 17360-83A , 17375-83A
Note
Fits Harley-Davidson Big Twin 84-17 & Sportster XL 86-20