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.
Durable radiator guard with mounting bracket for easy installation. Protects against rocks and road debris. Made in the USA.
Transparent cam cover that matches Assault series air cleaners and allows internal inspection. Made in the USA.
Transparent cover for viewing internal engine components. Matches the Assault series air cleaners. Made in the USA.
Transparent cover for viewing internal engine components; matches Assault series air cleaners. Made in the USA.
Mounts S&S E/G or Keihin CV style air cleaners to Mikuni HSR 42/45 carburetors. Made in the USA.
Reduces oil temperatures using engine temperature and vehicle speed. Quick 15-minute install; no oil cooler removal. Plug-n-play on M8 models with compatible ECM. Made in the USA.
Transparent cam cover designed to match Assault series air cleaners. Made in the USA.
- Versatile gasket kit for multiple engine applications
- Higher performance on imperfect surfaces
- Includes parts for head, base, covers and housings