S&S Cycle 900-1092 Top End Guardian Kit for 2017-Up M8 Models


Original price was: $1,545.95.Current price is: $1,314.06.

In stock

SKU: 900-1092 Categories: ,


S&S Cycle 900-1092 Top End Guardian Kit for 2017-Up M8 Models

  • 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
  • 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 cam
  • 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
  • A must have for cams with .550″ or greater lift


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