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Mayhem Racing

Gooseneck and Hardware Kit for Sirris R46

Gooseneck and Hardware Kit for Sirris R46

$295.00 USD
$295.00 USD
Sale Sold out

Convert your E-Ride Pro SR into an absolute race weapon with this gooseneck adapter. 

It's designed to fit specifically with the Mayhem Racing Sirris R46 shock.

  • A Mayhem Racing custom upper gooseneck adapter is required to fit the rear shock onto the frame
  • Installation involves drilling the frame
  • Clear guidelines are provided, and the process is straightforward
  • All parts and hardware are included with the kit
  • Optional step: If you want to use the larger bolt for bottom linkage, the stock linkage must be drilled to accept the new supplied larger bolt
  • No modifications to the frame are needed for the front fork

Required tools for install:

  • Torque wrench (18-35 ft-lbs)
  • Allen keys
  • Sockets
  • Drill
  • ⅜” drill bit (letter U)(smaller bit also recommended)
  • Grease
  • Medium strength Loctite
  • ¼” Center punch (optional)
  • 10mm drill bit (letter X) (optional for drilling lower linkage to use the larger supplied bolt)
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EASY INSTALL

No shortcuts. No compromises. Just pure race performance.

If you’re racing to win—and you want the most advanced suspension ever put on an E-Ride Pro SR—this is it.

SHOP ALL SUSPENSION

Sirris x Mayhem Racing suspension products >

The Partnership

  • Sirris Suspension — Engineering & Manufacturing

    Sirris designed and produced the race-spec fork and shock used in this build. That includes:

    • The F43 fork (230mm travel / 826mm extended length)
    • The R46 rear shock platform
    • Internal valving and Pro MX race-only tune
    • Component manufacturing, assembly, and quality control

    Sirris’ responsibility is the suspension units themselves—their engineering, performance characteristics, and manufacturing integrity.

    LEARN MORE ABOUT SIRRIS 

  • Mayhem Racing — Fitment Development & Installation Authority

    Tim at Mayhem Racing led the development of the bike-side integration for the E-Ride Pro SR platform.

    That includes:

    • Defining geometry targets
    • Determining required chassis modifications
    • Designing the custom upper gooseneck adapter
    • Establishing linkage changes and hardware spec
    • Creating and owning all installation procedures and instructions

    This system requires structural modifications to the E-Ride Pro SR chassis in order to achieve proper geometry, clearance, and race performance. Those modifications were developed, tested, and validated by Mayhem Racing.

    For that reason, Mayhem Racing is the sole authority on installation instructions and chassis modification guidance.

  • Why Installation Is Owned by Mayhem Racing

    This is not a bolt-on kit.

    To achieve this level of race performance, the platform requires:

    • A Mayhem Racing custom upper gooseneck adapter
    • Frame drilling and precision shimming
    • Drilling of the stock linkage to accept a larger bolt
    • Geometry-specific setup procedures

    These modifications fundamentally alter how the suspension integrates with the chassis.

    Sirris does not manufacture the E-Ride Pro SR frame, does not control its tolerances, and does not oversee individual installations. Because of this:

    • Sirris cannot validate third-party installation work
    • Sirris cannot assume liability for improper installation
    • Sirris does not publish or control chassis modification procedures

    All installation instructions, fitment specifications, and geometry guidance are created, maintained, and supported by Mayhem Racing.

    If you have questions about fitment, drilling procedures, adapters, hardware, torque specs, or chassis prep—contact Mayhem Racing directly.

  • Responsibility & Authenticity

    We’re proud of this collaboration—and we want to be clear and transparent about it.

    • Sirris stands behind the engineering and manufacturing of its fork and shock.
    • Mayhem Racing stands behind the fitment design and installation process.

    Both companies share a passion for innovation, rider progression, and building things that didn’t exist before.

    Clarity matters.

    This system performs at an elite level because it was developed intentionally, installed precisely, and ridden aggressively. 

    Proper installation is not optional—it is fundamental to safety and performance.