- 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.
Engine

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High-strength forged piston kit with premium wrist pins, carbon steel wire lock and JE Pro Seal rings.
High-strength piston kit with premium wrist pins, carbon steel wire lock and JE Pro Seal rings.
High-strength forged piston kit with premium wrist pins, carbon steel wire locks, and sealed rings for durable performance.
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.
Precision-milled ignition cover; direct replacement for Harley-Davidson® models from 2017 with Millwaukee-Eight (M8) engines (107, 114 & 117).
High-performance camshaft with Endurance Ramps for broad torque, reduced valve train noise, and billet steel construction.
Four-piece triple tree bolt set: two for the upper clamp and two for the lower clamp. Direct replacements for original zinc-plated bolts; uncoated to prevent flaking during tightening.