Rocker Arm Guardian Kit – M8

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)