S&S Cycle 2017+ M8 Models 1.640 To 1 Ration Forged Roller Rocker Arms

When you're looking to get the most out of your 2017 and newer Harley-Davidson M8 engine, S&S Cycle's forged roller rocker arms are a solid choice. This set includes a pair of rocker arms, designed to work with high-lift camshafts and improve the longevity of your valvetrain components. They are forged from 8620 steel, making them stronger and more durable than stock, and are capable of handling up to .650 inches of valve lift.

These rocker arms feature a 1.640 to 1 ratio, which is well-suited for cams with .550 inches of lift or greater. The roller design is a key benefit here, as it eliminates the side-to-side thrusting motion that can occur with traditional rocker arms. This reduction in thrusting means less wear on your valves and valve guides over time, helping to keep your engine running smoothly for longer. S&S Cycle used Finite Element Analysis (FEA) in their design process to ensure these components are built to withstand the demands of performance riding.

This set is designed to fit a wide range of Harley-Davidson M8 models, including popular bikes like the Road King, Street Glide, and Fat Boy. If you're upgrading your camshaft or simply looking to improve the reliability and performance of your M8's valvetrain, these S&S Cycle rocker arms are a well-built option that offers improved strength and reduced wear.