Choose a level of performance upgrade package to suit your budget or let us custom design a solution to your individual requirements.

Either way - with a Heavy Duty Performance package you'll get the best from your ride.

Stage 1

• Hi-flow air filter
• Exhaust system
• Engine management tuning system.

Choose a Power Commander 5 or SE Race Tuner (which require Dyno tuning at additional cost) or state-of-the-art Thundermax Auto tuning system with no Dyno tuning required from mild to wild.

Stage 2

Requires Stage 1 inclusions plus a choice of:

• Lifters
• Adjustable pushrods
• Camshaft

We offer a choice from quality manufacturers like Redshift, S&S and Andrews cams to suit your individual riding style. 

Stage 3

Requires Stage 1 and 2 inclusions.

• S&S quality 110 or 117 cu.i barrels
• Forged piston kit including top end gaskets.

This raises compression ratio to 10.3:1 using stock heads for an impressive power and torque boost. 

Stage 4

Requires Stage 1,2 and 3 inclusions.

A choice of:

• S&S C&C ported cylinder heads 
• HDM in-house personal porting package.

Slightly raising compression over stage 3 dramatically improving air speed and flow. 

Stage 5

Requires stage 1,2,3, and 4 inclusions.

• HI 55mm match ported throttle body
• PM 13" front brake rotor with a 6 piston caliber
• Front and rear Progressive suspension

It's balls to the wall, crank her over and HOLD ON ...

HDM's proven combination of quality components with the above stages will be customised to you and your ride.

Warp Speed

• Turbocharger
• Custom Cam grinds

After years of R&D, HDM has produced a range of custom Turbocharger packages - from stock DYI bolt on systems to custom engine and turbo builds with custom cam grinds to suit. 

HDM offers in-house custom Dyno tuning