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.
Steel-base, one-piece crankcase vent filters. 50.8 mm (2") diameter; 38.1 mm (1½") height. Available with or without mounting stud.
Individual refill clamps that reproduce major manufacturer fit and appearance. Sold in refill packs for straightforward maintenance and repairs.
OEM-quality replacement fuel line clamps sold in individual refill packs.
- Meets or exceeds OEM performance, aesthetics, and fit
- Exact replica of major OEM fuel line clamps
- Sold as individual refill clamp packs for easy replacement
OEM-style refill clamps manufactured to meet or exceed OEM performance, aesthetics, and fit; sold in individual refill packs.
OEM-style refill clamps manufactured to meet or exceed OEM performance, aesthetics, and fit. Exact replicas for fuel-line repairs.
Individual refill clamp packs that replicate OEM fuel line clamps. Manufactured to meet or exceed OEM performance and fit — convenient replacement for worn or lost clamps.
Adapter that allows mounting aftermarket big-air air cleaner kits to compatible carburetors. Precision billet construction. Not for use with Arlen Ness Big Sucker.
Allows installation of LA Choppers xXx or Baron Big Air Kit to Mikuni or S&S carburetors. Billet aluminum construction. Made in the USA. Not compatible with Arlen Ness Big Sucker air cleaners.
Mounts S&S E/G or Keihin CV style air cleaners to Mikuni HSR 42/45 carburetors. Made in the USA.
High-quality neck post bearing for reliable steering and long-lasting performance.