High-quality multi-layer steel cylinder head gasket for long-term reliability; fuel-resistant materials and Viton®-coated layers; made in the USA.
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Premium cylinder head gasket delivering reliable sealing, fuel resistance, and heat tolerance for long-lasting performance.
Mounts S&S E/G or Keihin CV style air cleaners to Mikuni HSR 42/45 carburetors. Made in the USA.
Durable sealing gasket resists fuels and chemicals while maintaining a tight fit to prevent leaks.
Heavy-duty replacement seals for the Harley-Davidson TSM connector to maintain a watertight connection.
- Bolt-on power: +40–50% on stock 107", 114" and 117" M‑Eight motors.
- Compressor and turbine housing with Garrett internals; plenum with integrated blow-off valve.
- Includes injectors, spark plugs, boost gauge with mount, oil feed/drain lines, custom cam cover, tune files, hardware and gaskets.
- Requires Thundermax ECM (sold separately). Does not fit Twin Cooled or non-removable fairing lowers. Offroad use only.
- Made in the USA.
Premium gasket pack offering multiple gasket types and advanced sealing technologies for reliable, fuel-resistant performance.
EST gasket kit with embossed stainless steel head, base, and rocker gaskets covered in proprietary rubber. Includes all gaskets, seals, and O-rings to rebuild the top end. Made in the USA.
Transparent cam cover designed to match Assault series air cleaners. Made in the USA.