Engine

Active filters
High-quality, fuel-resistant cover seal engineered for long-term reliability. Made in the USA.
Reinforced, smooth-bore fuel- and oil-resistant line for reliable service.
- 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.
Comprehensive gasket kit with MLS head gaskets, Viton-coated base gaskets and AFM exhaust seals; made in the USA.
Complete top-end kit with forged pistons, rings, retainer clips and chrome piston pins. Includes X-Ring package; pistons made in the USA.
Complete gasket kit with MLS head gaskets, Viton-coated base gaskets, blue Viton valve stem seals, and AFM exhaust gaskets. Made in the USA. Includes motor gaskets plus primary, derby and inspection cover gaskets where applicable.
Covers the gap between the transmission top cover and the engine cylinder for a finished look. Installs quickly and easily. Durable polished finish.