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.
Includes mounting screws. Easy bolt-on installation. Made in the USA.
- Protects internal timing components
- Includes mounting screws for installation
- Available in plated or anodized finishes
- Made in the USA
- Includes mounting screws
- Chrome-plated or anodized billet aluminum finish
- Made in the USA
Precision-milled timing cover. Includes mounting screws. Chrome-plated or anodized billet aluminum finish. Made in the USA.
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.
Compact oil cooler kit with AN #6 fittings, supplied clamps and reducers, and precision-machined components for durable, easy installation.
Transparent cam cover designed to match Assault series air cleaners. Made in the USA.
Complete oil cooler kit with AN #6 fittings and frame-mount clamps.
CNC-machined billet aluminum construction for precise fit.
Protects the oil sending unit sensor and connector; precision-machined for a snug, low-profile fit. Made in the USA.
Provides neat coverage for the oil sending unit sensor and connector. Made in the USA.