S&S Roller Rocker Arm Set for EVO and Twin Cam- Stock Ratio

• Forged from 8620 steel, heat-treated then shot-peened for additional strength and durability
• Rocker arms have .75" long bushings instead of the .50" long bushings found on most other rocker arms
• Feature a modified lubrication system with unrestricted roller oiling
• Must be used with adjustable pushrods; sold separately
• Recommended that new rocker shafts be used when installing roller rocker arms; available separately
• Made in the U.S.A.

Fits All 1984-2017 EVO & Twin Cam Engines
1986-2022 EVO Sportsters 
STOCK RATIO of 1.625:1