Holden
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The one stop shop for your Holden/HSV
Gm Motorsport is dedicated to delivering top-tier service for Holden performance upgrades.
With over 25 years of experience, we've created groundbreaking products. Our Ramjet OTR offers the largest air filter area on the market, while our Ramjet exhaust systems deliver some of the biggest power gains in the header industry.
When paired with our CNC heads and renowned camshaft range, your car will not only turn heads but leave a lasting impression on the road!
Every car is tuned by Phonsy Mullan, a two-time world champion with more than 30 years of racing development experience.
Rest assured, your car is in expert hands. With the perfect combination of sound, power, and reliability, we consistently hit the mark!
Choose your car
Worldwide shipping
ZIP Pay & Afterpay available
Expert knowledge, local support
Proudly Australian owned
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