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 designed to match Assault series air cleaners. Made in the USA.
Complete hardware set for reinstalling the side cover of the transmission. Made in the USA.
Durable engine support assembly made in the U.S.A., with precision components and complete hardware for secure mounting.
- Complete motor set with all side covers and mounts
- Includes lifter base timing plug and inner primary mount
- Made in the U.S.A.
Complete bolt kit for timing cover installation. Includes necessary fasteners for a secure fit; easy to install.
Includes cam, primary, oil hose cover and transmission side cover. Made in the U.S.A.
Complete bolt kit for side covers; includes cam, primary, oil hose cover and transmission side cover.
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.
Precision-machined cast-iron valve guide compatible with unleaded fuel; OEM-style replacement.