Product Description
The Assassin Turbo System is Trask’s most advanced performance setup to date. Featuring a V-band Garrett 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 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 Garrett 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 120”+ 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: 4–5 weeks post-order
Not legal for sale or use on pollution-controlled vehicles in the U.S. or California
Usually ships within 26 days. 
