Bolt on 40%-50% more power. Trask compressor and turbine housing with Garrett internals. For 107", 114" and 117" M8 motors. Trask plenum with integrated blow-off valve. Includes all install components: larger injectors, spark plugs, boost gauge with mount, oil feed, drain lines, custom cam cover, Thundermax tune files and all necessary hardware and gaskets. Made in the USA. Requires use of Thundermax ECM (sold separately).. Does not fit Twin Cooled models.. Intended for offroad use only and recommended for experienced riders.. Fits all '23 air cooled Softails and Touring models without lowers..