S&S Cycle Forged 8620 Steel Roller Rocker Arms - Harley Milwaukee-Eight

S&S Cycle forged 8620 steel roller rocker arms are specifically engineered for Harley Milwaukee-Eight engines, featuring roller contact surfaces to significantly reduce valvetrain wear under high-lift cam profiles. Designed using Finite Element Analysis (FEA), these rocker arms are built to handle 0.550 inch lift and greater, supporting up to 0.650 inch maximum valve lift without compromising valvetrain longevity.

Why riders pick this

• Forged 8620 steel construction
• Roller contact surfaces reduce wear
• Optimized geometry for high-lift cams
• Supports 0.650 inch maximum valve lift
• Designed using Finite Element Analysis (FEA)
• 1.640 rocker ratio

When pushing the boundaries of your Milwaukee-Eight engine with aggressive camshafts, valvetrain stability and durability become paramount. S&S Cycle's forged 8620 steel roller rocker arms are the answer. Unlike traditional rocker arms, these units feature roller contact surfaces that eliminate valve thrust and reduce wear, crucial for maintaining valvetrain integrity with high-lift cams. The optimized geometry and robust construction, developed through Finite Element Analysis (FEA), ensure precise valve control and exceptional longevity, even with maximum valve lifts of up to 0.650 inches.

Advanced Valvetrain Control and Durability

• Forged 8620 steel construction for superior strength and resilience
• Roller contact surfaces eliminate valve thrust and significantly reduce wear
• Optimized geometry specifically for high-lift cam applications
• Supports an impressive 0.650 inch maximum valve lift
• Engineered with Finite Element Analysis (FEA) for precision and reliability
• Features a 1.640 rocker ratio for enhanced performance

Unleash Your Milwaukee-Eight's Full Potential

These S&S Cycle roller rocker arms are an essential upgrade for any Milwaukee-Eight owner serious about performance, especially those running camshafts with 0.550 inch lift or greater. They provide the confidence that your valvetrain can handle the demands of increased power and higher RPMs, translating to more usable torque and horsepower. While designed for performance, they also serve as a robust upgrade for any M8 engine. Always confirm fitment with our Shop by Bike tool to ensure these are the right components for your Harley-Davidson model.

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 900-1084
• Material: 8620 Steel
• Rocker Ratio: 1.640
• Max Valve Lift: .650 in.
• Weight: 4.2 lb
• Category: Engine Components / Rocker Arms

Common questions