Trask Softail Assault Turbo

The Assault Turbo System is a bolt-on upgrade built for riders who want real power without the teardown. This system brings big-league turbo performance to your Softail with an aggressive look and serious horsepower gains. No tuning mystery, no extra fabrication, no wasted time.

It delivers instant throttle response, relentless pull, and the distinct soundtrack of a turbocharged Harley V-Twin. If you want to run harder, faster, and louder — without waiting on a machine shop — this is how you do it.

Bolt it on. Build real power. Own the road.

Key Features & Benefits

• Bolt-on turbo system designed specifically for Harley Softail models
• Garrett turbocharger with integrated blow-off valve and 2-bar map sensor
• Stainless steel header pipes with heat shields and sawed-off tailpipe
• Plenum assembly, turbo cam cover, boost gauge with mount
• High-flow injectors, NGK spark plugs, heavy-duty clutch spring
• Complete install kit with all hardware and gaskets included

Stage Options

• Stage 1: Best for 117” or smaller displacements
• Stage 2: Designed for 120”+ or future engine builds

Before You Order

• Select your bike’s year range to ensure perfect fitment
• Choose Stage 1 or Stage 2 based on your motor size and upgrade plans

Important Notes

• Twin Cam Systems include intercoolers; M8 systems do not
• 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 in pollution-controlled vehicles in the US or California

Ready to Upgrade?
Give your Touring bike the boost it deserves. Select your year and stage, and experience the power of the Assault Turbo System.

Ready to Wake Up Your Softail?
Pick your year. Choose your stage. Bolt it on and let it rip.