The Assassin Turbo System is Trask’s most advanced performance setup to date. Featuring a V-band turbo and a hand-built 3” pie-cut stainless discharge, it’s made to support serious power while delivering the rideability Trask systems are known for. Built for big-inch Harley-Davidson M8 engines, the Assassin was designed for riders pushing past what “fast” used to mean without sacrificing reliability, flow, or finish. Key Features & Benefits V-band turbo with 3” pie-cut stainless discharge External wastegate for clean, controlled boost Plenum assembly with integrated blow-off valve and 2-bar map sensor Stainless steel header pipes with heat shields Turbo cam cover, boost gauge with mount High-flow injectors, NGK spark plugs, heavy-duty clutch spring Complete hardware kit and gaskets included Stage Options Stage 2: Designed for Harley-Davidson 117”+ displacement motors(Can also be installed on a 114” if you’re planning to build to 128”+) Before You Order Select your bike’s year range to ensure proper fitment Confirm you’re running—or planning—a 120”+ engine Important Notes Twin Cam models not supported Thundermax ECU not included – a base map is provided Not compatible with fixed lower fairings on liquid-cooled models May not fit all engine guards Typical lead time: 2-3 weeks post-order Every kit is hand built to order Not legal for sale or use on pollution-controlled vehicles in the U.S. or California