Engine
Active filters
- 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.
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.
Comprehensive set of gaskets, seals and O-rings; made in the USA for long-term reliability.
High-quality cylinder head gasket engineered for long-lasting seals. Multi-layer and composite options resist heat, creep and cracking. Made in the USA.
High-quality, fuel-resistant oil pump gasket with AFM construction and aluminum core bonded to a nitrile rubber coating. Made in the USA.
Exact-fit wrist pin bushing made in the USA. Oil holes must be drilled after installation.
Progressively wound racing valve springs offering improved fatigue life and consistent high-rpm performance.
Precision-machined nickel bronze construction for excellent wear resistance and heat conductivity.
Compatible with no-lead fuel; accepts various valve-stem materials.
Accepts special valve guide seals (sold separately). Made in USA.
Precision-machined shouldered valve guide for superior wear resistance and efficient heat dissipation.
One-piece stellite-tipped stainless-steel valve with nitrided finish for reduced friction, superior wear resistance, and improved flow. Made in the USA.