S&S Rocker Arm Guardian Kit - M8

Serious protection for serious builds.

The S&S Rocker Arm Guardian Kit reinforces your Milwaukee-Eight valvetrain with stronger shafts, studs, head bolts, and forged 1.640 ratio roller rockers — built for high-lift cam setups and increased cylinder pressure.

What It Does

• Strengthens rocker shafts and head fasteners

• Reduces valvetrain flex and wear

• Improves geometry for high-lift cams

• Direct oiling to valve springs for better cooling

• Serviceable, rebuildable roller rockers

Key Specs

• Forged 8620 steel roller rockers

• 8640 heat-treated head bolts (200,000 psi tensile strength)

• 1.640 ratio

• Capable of up to .650” valve lift

• Recommended for cams .550” lift and above

• Compatible with stock or S&S CNC heads