S&S Cycle Rocker Arm Guardian Kit for Harley Davidson M-8

S&S Cycle Rocker Arm Guardian Kit for Harley Davidson M-8

Rocker Arm shafts, Rocker Arm Stud Kit, Head Bolt Kit and Performance Roller Rocker Arms are included in this kit

Rocker Arm Shafts

• Replace broken or worn OEM pieces with stronger, more durable S&S performance parts
• Direct replacement for stock parts
• Hardened and surface ground for ultimate precision and durability

Rocker Arm Stud Kit

• Extend the life of your cylinder heads
• Prevent damage to Rocker Arm Towers
• Install studs and safely re-torque nuts
• Black Oxide Finish
• 12 pt Nuts

Head Bolt Kit

• Heat Treated 8640 Steel
• 200,000 psi Ultimate Tensile Strength
• 14% increases in strength over stock
• Stronger material than stock Head bolts
• Durable Black Oxide Coating
• 9/16" 12 point head with integral washer
• Formed threads
• Cold Formed Head
• Reusable

Forged Roller Rocker Arms

• Forged from 8620 steel for greater strength
• Designed using Finite Element Analysis (FEA)
• Rollers eliminate thrusting on valves for decreased wear on the valve train
• Rocker geometry is better suited to high lift cams
• Larger surface area on the thrust surfaces reduces wear on the heads
• Bushings are 50% longer than stock, increasing time between rebuilds
• Compatible with stock or S&S CNC heads

Oil is sprayed directly on the valve springs, reducing potential for breaking a valve due to over-heating (stock rockers tend to oil the rocker boxes, not the valves)

• 1.640 Ratio
• Capable of .650" max Valve Lift
• Serviceable and rebuildable for generations of durability
• A must have for cams with .550" or greater lift