Trask Custom Stainless Assassin Turbo System

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

• Designed specifically for M8 Touring models

• 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