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

S&S engineers designed stronger, more durable components that will help you get the most out of your M8 and increase the longevity of your valvetrain components.

Rocker geometry is better suited to high lift cams and a must have for cams with .550 in. or greater lift

Rollers eliminate thrusting on valves for decreased wear on the valve train

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

Designed using Finite Element Analysis (FEA)

Forged from 8620 steel for greater strength

Capable of .650 in. max Valve Lift

Stock 1.640:1

1.640 Ratio