S&S Cycle Rocker Arm Guardian Kt M8 Rocker Arms And Shafts S&S Cycle
S&S Cycle Rocker Arm Guardian Kt M8 Rocker Arms And Shafts S&S Cycle
S&S Cycle

S&S Cycle Rocker Arm Guardian Kt M8

Sale price€1,086.90 Regular price€1,143.90
Save 5%
SKU: 09270042
IN STOCK! Dispatches within 1–3 business days
Free EU shipping over €149
30-day returns on eligible items
Need fitment help? Contact our team

Rocker Arm Guardian Kit

  • 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 durabilty
  • A must have for cams with .550" or greater lift
  • EU: 1378,95 MPa ultimate tensile strength
  • EU: 1,43 cm 12-point head with integral washer
  • EU: Capable of 1,65 cm max Valve Lift
  • EU: A must have for cams with 1,40 cm or greater lift
  • Kit Includes:
    • 4x Rocker Arm Shafts
    • 8x Rocker Arm Stud Kit
    • 8x Head Bold Kit
    • 4x Forged Roller Rocker Arms
    FAQ
    Shipping & Delivery

    The estimated dispatch time is displayed on each product page and depends on the product’s stock location:

    • In stock: dispatch within 1–3 business days
    • European stock: dispatch within 2–3 business days
    • USA stock: estimated dispatch within 3–5 weeks
    • Products with a specific lead time: estimated dispatch according to the timeframe displayed on the product page

    Once your order has been dispatched, you will receive a confirmation email with tracking information.

    Estimated carrier transit times are:

    • France: 1–5 business days
    • Most European destinations: 5–10 business days
    • Countries outside the European Union: delivery times may vary depending on the destination and customs clearance

    The dispatch estimate and carrier transit time are separate.

    Compatibility

    You can verify compatibility in two ways:

    • Use the vehicle selector on the product page to check whether the part matches your motorcycle.
    • Review the fitment table for the full list of compatible models and years.

    Some parts may require additional components, modifications or a specific existing setup. Always read the fitment notes and product description before ordering.

    Still unsure? Contact us with:

    • motorcycle make and model;
    • model year;
    • exact version or trim;
    • current modifications;
    • product reference or link.

    Our team will help you confirm compatibility before ordering.

    Returns & Exchanges

    Eligible items may be returned within 30 days of delivery.

    To be accepted, the item must be:

    • unused and uninstalled;
    • in its original condition;
    • returned with its original packaging, labels and accessories.

    Parts that have been installed, damaged or modified cannot be returned.

    Please contact us before sending an item back. Returns sent without prior authorization may not be accepted.

    Return shipping costs remain the customer’s responsibility unless the item received is incorrect, damaged or defective.

    Customs Duties & Taxes

    European Union

    Orders delivered within the European Union are shipped from France. No import duties are charged upon delivery.

    Countries outside the European Union

    Local VAT, customs duties and carrier clearance fees may apply. These charges are determined by the destination country and remain the customer’s responsibility.

    Payment Options

    We accept major credit and debit cards, PayPal and the installment payment methods displayed at checkout.

    Eligible orders may be paid in 3 or 4 installments, subject to the payment provider’s approval and applicable limits.

    Free EU shipping over 149€

    Free shipping is automatically applied to EU orders over €149.

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