GVM Upgrades
Certified payload upgrades for safe, legal, and comfortable heavy load carrying
Carry More, Legally
Salisbury, Adelaide
Some vehicles simply do not have enough capacity to safely and legally carry the payloads their owners need. Once you factor in a bull bar, canopy, drawers, dual battery system, accessories, and your actual gear, many 4WDs are sitting at or over their legal GVM before you even hook up a trailer.
A GVM upgrade solves this. It is a certified modification that increases the legal gross vehicle mass your vehicle can carry, so you can safely and legally carry heavier loads. The result is a vehicle that is more stable, more comfortable to drive while towing, and properly compliant on the road.
At Stealth Installs, we carry out the upgrade work and assist with the full certification process. From selecting the right components to engineering sign-off, we handle the process end to end so your GVM upgrade is properly ticked off and certified.
What We Do
Certified GVM Upgrades
Increase your vehicle's legal gross vehicle mass so you can safely and legally carry heavier payloads — accessories, gear, and cargo without going over.
Towing & Touring Support
Higher GVM means better stability, comfort, and control when towing or touring loaded. No more sitting on the bump stops.
Engineering Certification
Full engineering documentation and sign-off so your vehicle is road-legal and compliant at its new, higher gross vehicle mass.
Component Upgrades
Upgraded springs, shocks, and supporting components matched to your target GVM for safe, comfortable handling loaded or empty.
Full Service List
Brands We Use
We use premium components from trusted brands to ensure your GVM upgrade is safe, compliant, and durable.
Dobinsons
Premium springs and shock absorbers engineered for Australian conditions, used extensively in our GVM upgrade packages.
Bilstein
High-performance shock absorbers and struts used in select GVM upgrade kits for superior damping and ride quality.
H&R
Quality coil springs used in GVM upgrade packages to provide the correct spring rate for your target payload.
Frequently Asked Questions
Get a Quote
Tell us about your vehicle and what you're looking to achieve — we'll get back to you with honest advice and a quote.
Not Sure What You Need?
Give us a call and we'll point you in the right direction.