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.
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.
Precision valve guides with tapered nose design, no-lead fuel compatibility, and top-hat seal fitment. Made in the USA.
Precision-machined cast iron valve guide compatible with unleaded fuel and all valve-stem materials. Made in the USA.
Precision-machined shouldered valve guide compatible with no-lead fuel; accepts special seals (sold separately). Made in the U.S.A.
Precision-machined shouldered valve guide; compatible with no-lead fuel. Sold each.
- Precision-machined cast iron construction
- Compatible with no-lead fuel and all valve-stem materials
- Accepts special valve guide seals (sold separately)
- Made in the USA
Precision-machined cast iron valve guide compatible with no-lead fuel; seals sold separately.