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.
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.
Made in the USA replacement gasket set that restores proper sealing and reduces leaks. Easy to install with standard tools.
Reliable replacement sealing component that prevents oil and coolant leaks and is designed for straightforward installation.
Reliable engine gasket that restores a leak-free seal and supports routine maintenance.
Durable 5th Gear sealing set, made in the U.S.A., ideal for routine maintenance and leak prevention.
Replacement o-ring for cam position sensor, engineered for a secure, leak-free seal.
Complete set of gaskets, oil seals and O-rings for top-end engine rebuilds.
High-quality James gaskets with Rubber-Covered Metal and Foamet® options for reliable sealing. Made in the USA.