Engine

Active filters
Compact universal fitting for joining flare and threaded connections. Easy install and durable performance.
- 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.
Enhances the center of the oil cooler trim with a stylish guard. Easy to install and built in the USA.
Dresses up the oil cooler area with matching vent‑screen material; easy to install. Made in the USA.
Durable points cover with precision fit for restoring and protecting the ignition assembly. Made in the USA.
Precision-machined points cover with durable construction. 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.
Slim cam cover with a cut-away corner for improved floorboard clearance. Hardware included. Made in the USA.
Steel-base, one-piece crankcase vent filters. 50.8 mm (2") diameter; 38.1 mm (1½") height. Available with or without mounting stud.
Mounts S&S E/G or Keihin CV style air cleaners to Mikuni HSR 42/45 carburetors. Made in the USA.
Transparent cam cover designed to match Assault series air cleaners. Made in the USA.