We supply and install GVM upgrades and coil conversions in Brisbane, helping you safely carry more weight, improve ride quality, and get the most out of your vehicle, whether you're touring, towing, or working.
-
GVM Upgrades For Work & Touring
A GVM upgrade should be practical, compliant, and built around how you actually use your vehicle. Whether you're setting up a touring rig or carrying heavy loads for work, we deliver GVM upgrades tailored to real-world conditions.
Our GVM upgrades offer:
- Increased legal payload capacity
- Improved stability & load handling
- Safer towing capability
- Heavy-duty suspension upgrades
- Compliance with AU regulations
- Touring & trade options
From suspension upgrades to full vehicle setups, our team ensures your GVM upgrade in Brisbane is engineered, compliant, and built to perform.
-
Coil Conversions Done Right
Your suspension setup should improve comfort, control, and performance, especially under load. A coil conversion transforms how your vehicle drives both on-road and off-road, no matter the distance.
Our coil conversions offer:
- Improved ride comfort
- Improved shock absorption
- Better handling and control
- Increased suspension flexibility
- Enhanced off-road performance
- Consistency under varying loads
- Custom suspension tuning options
From design to installation, we ensure your coil conversion setup delivers a smoother, more capable driving experience.
-
More Capability, Better Performance, Total Confidence
Upgrading your GVM or suspension isn’t just about capacity, it’s about making your vehicle safer, more capable, and better suited to your lifestyle. Whether you're towing caravans, trailers, and boats, or carrying gear, tools, or equipment - GVM and suspension upgrades provide total confidence.
- Increase reliability
- Improve handling and braking
- Tow with confidence
- Reduce wear and stress
- Carry more without exceeding limits
Whether you're building a touring setup or a work vehicle, these upgrades ensure your 4WD performs when it matters most.
Collapsible content
What is a GVM Upgrade?
A Gross Vehicle Mass (GVM) upgrade increases the maximum weight your vehicle can legally carry, including passengers, accessories, and cargo. It’s essential for vehicles with added weight from canopies, tools, or touring gear.
What is a Coil Conversion?
A coil conversion replaces leaf springs with coil springs to improve ride comfort, handling, and suspension performance—especially in heavily loaded or off-road vehicles.
Can you upgrade my American Truck?
Yes! We for more information in how we can upgrade your American Truck, click here.
Why choose McCormacks 4WD?
McCormacks 4WD is your GVM Upgrade Specialists in Brisbane
- Experienced in GVM upgrades and suspension systems
- Focus on safety, compliance, and performance
- Tailored solutions for touring and work vehicles
- Professional installation and advice
- Trusted by Brisbane 4WD owners
Engineered & Compliant
Built to Perform
At McCormacks 4WD, we don’t just install parts—we ensure every upgrade is properly engineered, compliant, and designed to work as part of your complete setup.
Our team combines real-world 4WD experience with technical knowledge to deliver upgrades you can rely on.
Take a behind-the-scenes look at a JMACX GVM upgrade in our Brisbane workshop.
GVM Upgrades & Coil Conversions in Brisbane, Queensland
McCormacks 4WD provides expert GVM upgrades and coil conversions in Brisbane, helping 4WD owners safely increase payload capacity, improve suspension performance, and maintain compliance. Whether you're upgrading for touring or work, we deliver solutions built for Australian conditions.
Need help choosing the right upgrade?
Chat with our sales team of 4WD experts or request a personalised quote, we’ll match the perfect setup to your vehicle and lifestyle.