Hemi Performance Parts | Gen III Hemi Head Studs

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The Chrysler Gen III Hemi is a modern muscle icon — a pushrod V8 that has powered Challengers, Chargers, and Ram trucks to impressive performance figures straight from the factory, and even more impressive numbers in the hands of serious builders. Prime Speedworks stocks precision fasteners for Hemi builds, including P1 Fasteners head studs and rocker studs engineered for high-boost and high-horsepower 5.7, 6.1, and 6.4 applications.

Whether you're building a supercharged street Hemi or a dedicated drag engine, our parts are sourced from trusted motorsport brands and available with fast Australian shipping. The hardware serious Hemi builders rely on.

OUR STORY

Prime Speedworks was built at the track, not in a boardroom.

With decades of real motorsport experience, we’ve gone fast across it all — V8 Supercars, Offshore Powerboats, Sprintcars, Midgets, and Drag Racing from Top Fuel to Super Sedan, including the brutal world of Drag-and-Drive.

We don’t chase hype — we back proven performance. Every product we support is chosen because it survives real racing, not because it looks good on a shelf.

If it doesn’t make you faster, stronger, or more reliable, it doesn’t belong at Prime Speedworks.

Affiliations

Prime Speedworks is proud to play a part in the Performance and Racing Industry in Australia and Worldwide, supporting industry bodies and initiatives.

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