GVM upgrades - Certified & Engineered, Australia wide

Legally increase your vehicle's Gross Vehicle Mass with full engineering certification — built for 4WDs, utes and touring rigs carrying real load.

Get a quote

Jump to FAQs Jump to example projects GVM Upgrade Finder

Related services

ATM upgrades →

Heavy vehicle engineering (VSB6) →

Vehicle modification engineering →

From the blog

What is a GVM upgrade? →

Understanding VSB6 →

Understanding the vehicle certification process→

Ready to upgrade?

Servicing Northern Territory, Queensland, Western Australia, South Australia registered vehicles Australia wide

Frequently asked questions

How long does the engineering process take?

Timeframes vary depending on the complexity of the project and the documentation required. Straightforward inspections may be completed quickly, while more complex engineering assessments or custom modifications require additional analysis and documentation. Furthermore, difference in wait times are dependent on the regulatory body providing the approval. Each State and Territory has its own body, as does the federal system.

How much does a GVM upgrade cost?

Total cost = engineering certification +shop install. Engineering certification starts anywhere between $1,990 and $5,990 depending on your vehicle type, complexity, and whether there are type approvals available in your state or territory. Shop installs vary from $2,500 to beyond $50,000 depending again on type of vehicle and modifications required/desired. Call us to discuss.

Is your vehicle suitable for a GVM upgrade?

Possibly. It depends on the vehicle model, chassis, suspension, axle limits, brakes, tyres, and intended use. We review those factors to confirm whether a GVM upgrade is suitable and what certification is needed. See our GVM Upgrade Finder tool or call us to discuss.

How do GVM and GCM differ on your vehicle?

GVM is the maximum weight your vehicle can carry when loaded. GCM is the maximum combined weight of the tow vehicle and trailer together. A GVM upgrade may not change GCM. We can help you work out what applies to your setup.

Will a GVM upgrade increase my towing capacity?

Not necessarily. A GVM upgrade increases the maximum allowable weight of the vehicle itself, but it does not automatically increase towing capacity or Gross Combination Mass (GCM). Every vehicle has specific limitations, and these should be considered when planning modifications or towing heavier loads.

What information do I need to get a quote?

To provide accurate advice, we'll generally need:Vehicle make, model and yearVIN (if available)Registration state or territoryDetails of any existing or planned modificationsIntended use (touring, towing, commercial, etc.)Providing this information upfront helps us identify the most suitable engineering pathway and provide an accurate quotation.

What's the difference between pre-registration and post-registration GVM upgrades?

Pre-registration GVM upgrades are done before the vehicle is registered and are often part of a Second Stage of Manufacture (SSM). Post-registration upgrades are performed on already registered vehicles and may have different compliance requirements.

How much can I increase my GVM?

The amount you can increase your GVM depends on your vehicle's make, model, and structural capacity. A licensed engineer can assess your vehicle and determine the maximum allowable GVM.

Can I get a GVM upgrade after my vehicle is registered?

Yes, GVM upgrades can be performed on registered vehicles. However, the process and requirements may vary depending on your state or territory.

Does a GVM upgrade increase my GCM?

No, a GVM upgrade does not automatically increase your GCM (Gross Combination Mass). GCM is determined by the vehicle manufacturer and may require separate certification.

What is a GVM upgrade?

A GVM (Gross Vehicle Mass) upgrade increases the maximum allowable weight your vehicle can carry when fully loaded. This is achieved by modifying components such as suspension, brakes, and axles to meet higher load requirements.

Does a GVM upgrade affect insurance?

Yes, a GVM upgrade can affect your insurance. It's important to inform your insurer about the modification to ensure your policy remains valid.

Is a GVM upgrade legal in Australia?

Yes, GVM upgrades are legal in Australia, provided they comply with the Australian Design Rules (ADRs) and state or territory regulations. Certification by a licensed engineer is typically required.

Can I reverse a GVM upgrade?

Yes, a GVM upgrade can be reversed, but it requires re-certification to ensure the vehicle complies with its original specifications.

Does it affect warranty?

A GVM upgrade may affect your vehicle's warranty, especially if the modifications are not approved by the manufacturer. Check with your dealer or manufacturer for details.

Does it affect resale value?

A GVM upgrade can affect resale value positively or negatively, depending on the buyer's needs. Some buyers may value the increased capacity, while others may prefer an unmodified vehicle.

What modifications are normally required?

Common modifications for a GVM upgrade include upgrading the suspension, brakes, and axles to handle increased loads. Additional components may also be modified depending on the vehicle.

What is a GVM upgrade?

A GVM (Gross Vehicle Mass) upgrade increases the legal carrying capacity of your vehicle — the maximum weight it's allowed to be when fully loaded with fuel, passengers, accessories and gear.

Standard 4WDs and utes are often overloaded the moment you fit a canopy, bull bar, dual battery system and touring gear, even before passengers and water get on board.

A properly engineered upgrade replaces or reinforces suspension components to safely support the extra weight, and comes with an engineer's compliance certificate — the legal paperwork that lets your upgraded GVM be recorded on your vehicle registration.

Without certification, an overloaded vehicle is not road-legal, may be uninsured in the event of a claim, and can fail a roadworthy inspection.

The process is slightly different for a Heavy Vehicle (>4.5 tonnes) versus a Light Vehicle. We can guide you as to the specific process that applies to your vehicle.

Light Vehicles - Read our full guide on VSB14 compliance→

Heavy Vehicles - Read our full guide on VSB6 compliance →

Our process

01

Assessment

We review your vehicle, intended load, and touring setup to determine the right upgrade path.

02

Engineering

Suspension and chassis components are selected and fitted to safely support the new GVM.

03

Inspection

The vehicle is inspected, weighed and tested to confirm it meets the required standard.

04

Certification

We issue engineering compliance certification so your new GVM can be recorded on registration.

Related services

ATM upgrades →

Heavy vehicle certification (VSB6) →

Vehicle modification engineering →

From the blog

What is a GVM upgrade? →

Understanding VSB14→

Understanding VSB6 →

Understanding the vehicle certification process→

Ready to upgrade?

Servicing registered vehicles Australia wide

Call now

Get your GVM upgrade certified right, the first time.

Get a quote

Contact KME Vehicle Engineering

Independent GVM engineering you can trust

Unlike companies that only sell suspension kits, KME provides independent engineering advice and certification. We recommend solutions that are legal, practical and suited to how you actually use your vehicle.

Fully compliant

ADR and state regulations
Engineering certification
National experience

Vehicle-Specific Advice

Touring vehicles
Work utes
Fleet vehicles
Heavy vehicles

Australia wide

Remote assessments
Dealer support
Interstate certification
National approvals

Experienced

15+ years of engineering
Practical advice
Fast turnaround
Real technical knowledge

GVM Upgrade finder - What GVM upgrade can you get with KME Vehicle Engineering?

Make

Model

Starting GVM weight (kg)

Available GVM upgrade (kg)

Starting Price

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Available GVM upgrade (kg)

Toyota

Hilux 8GEN

3,050

3,300 or 3,500

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser Prado 150 series

2,990

3,500

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 300 series

3,280

4,000 or 4,210

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 200 series

3,300

4,000 or 4,200

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 100 series

3,180

3,580 or 3,900*

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 78 series (2003 - 2020)

3,300

4,200

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 79 series (2003-2020)

3,300

4,200

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Nissan

Y62 Patrol

3,500

4,000

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Ford

F150

3,220

3,600 or 4,200

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Ford

Ranger 2 (2018 onwards)

3,200

3,500

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

ISUZU

MU-X (2021 onwards)

2,800

3,300

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

ISUZU

MU-X (2013-2020)

2,950

3,200

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Mazda

BT-50 (2012-2020)

3,200

3,500

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Ford

F450

8,000

13,500

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

Ford

F350

4,490

7,000

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

Ford

F250

4,490

6,000

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

Ford

F150

3,265

4,100

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Ford

Ranger 2

3,200

3,500

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Cheverolet

Silverado 4500

8,000

10,400

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

Cheverolet

Silverado 3500

4,490

6,700

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

Cheverolet

Silverado 2500

4,490

6,000

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

Cheverolet

Silverado 1500

3,300

4,000

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

RAM

RAM 4500

4,490

8,700

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

RAM

RAM 3500

4,490

6,011

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

RAM

RAM 2500

4,490

6,000

$5490

Starting GVM (kg)

Available GVM upgrade (kg)

$5490

Starting price

RAM

RAM 1500

3,450

4,000

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Hilux (GUN Variants)

3,000

3,500

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Hilux (KZN & KUN variants)

3,000

3,300

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser Prado 150 series

3,000

3,500

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser Prado 120 series

2,990

3,400

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 70 series (inc 75, 76, 78, 79 series)

3,300

4,200

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 80 series

2,960

3,350

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 100 series

3,180/3,260

3,500/3,580 or 3,900*

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 200 series

3,300

4,200

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Landcruiser 300 series

3,280

4,210

$1990

Starting GVM (kg)

Available GVM upgrade (kg)

$1990

Starting price

Toyota

Hilux 8GEN

3,050

3,300 or 3,500

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser Prado 150 series

2,990

3,500

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 300 series

3,280

4,000 or 4,210

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 200 series

3,300

4,000 or 4,200

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 100 series

3,180

3,580 or 3,900*

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 78 series (2003 - 2020)

3,300

4,200

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 79 series (2003-2020)

3,300

4,200

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Nissan

Y62 Patrol

3,500

4,000

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Ford

F150

3,220

3,600 or 4,200

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Ford

Ranger 2 (2018 onwards)

3,200

3,500

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

ISUZU

MU-X (2021 onwards)

2,800

3,300

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

ISUZU

MU-X (2013-2020)

2,950

3,200

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Mazda

BT-50 (2012-2020)

3,200

3,500

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Ford

F450

8,000

13,500

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Ford

F350

4,490

7,000

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Ford

F250

4,490

6,000

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Ford

F150

3,265

4,100

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Ford

Ranger 2

3,200

3,500

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Cheverolet

Silverado 4500

8,000

10,400

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Cheverolet

Silverado 3500

4,490

6,700

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Cheverolet

Silverado 2500

4,490

6,000

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Cheverolet

Silverado 1500

3,300

4,000

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

RAM

RAM 4500

4,490

8,700

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

RAM

RAM 3500

4,490

6,011

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

RAM

RAM 2500

4,490

6,000

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

RAM

RAM 1500

3,450

4,000

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Hilux (GUN Variants)

3,000

3,500

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Hilux (KZN & KUN variants)

3,000

3,300

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser Prado 150 series

3,000

3,500

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser Prado 120 series

2,990

3,400

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 70 series (inc 75, 76, 78, 79 series)

3,300

4,200

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 80 series

2,960

3,350

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 100 series

3,180/3,260

3,500/3,580 or 3,900*

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 200 series

3,300

4,200

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Toyota

Landcruiser 300 series

3,280

4,210

Starting GVM (kg)

Available GVM upgrade (kg)

Model

Make

Get your GVM upgrade certified right, the first time.

Contact KME Vehicle Engineering

Example GVM upgrade projects

Read the whole story

Mazda BT-50 GVM Upgrade

Queensland

GVM, Heavy vehicle

GVM re-rating for a 2017 Mazda BT-50 via upgraded suspension under the QLD LS15/LS11 code, with revised tyre placard and load capacity labelling.

Read the whole story

ELM Isuzu NPS 75 Tow Pin Rating

Western Australia

GVM, Heavy vehicle, Vehicle Modification

Engineering assessment and certification of the tow pin on an Elm Equipment ISUZU NPS 75 bullbar (model E2275-0094), certified to VSB 6 Section H Chassis for a 4,500 kg GVM. Analysis returned a safety factor of 3.7 against yield under a 4.5 t static load — an equivalent rated capacity of ~16.7 t.

Read the whole story

Toyota Landcruiser 79 series GVM upgrade to 4.5t

Northern Territory

GVM, Heavy vehicle

GVM upgrade for a Toyota Landcruiser 79 Series, taking GVM from 3,510kg to 4,500kg. Engineered with ARB Old Man Emu suspension and an extended rear axle, backed by Finite Element Analysis of the differential and axle to confirm structural strength at the increased rating. Approved by NT Transport under VSB 6.

Read the whole story

Silverado 2500 GVM upgrade to 6t

Victoria

GVM, Heavy vehicle, Vehicle Modification

Upgraded suspension, brake system certification, GVM upgrade to 6t, axle re-rating for this Silverado 2500.

Read the whole story

Prado GVM Upgrade to 3.5T

Western Australia

GVM, Vehicle Modification

Toyota Prado GVM upgrade to 3,500kg — suspension and braking assessment and certification to support increased touring payload.

Read the whole story

300 Toyota Landcruiser Commercial build pre-rego SSM

Northern Territory

GVM, GCM, 300 Series Commercial Build, Vehicle Modification, BTC, SSM

Pre-registration Toyota LandCruiser 300 Series commercial build-out — rearmost seats removed and toolbox/drawer system installed, rear cargo barrier fitted, HD springs and shock absorbers, additional ADR-compliant lighting. Re-rated to GVM 4,210kg, GCM 7,800kg, BTC 4,000kg, and classified as a commercial vehicle (ATO Private Tax Ruling, no LCT).

Read the whole story

RAM3500 to 6.2t

South Australia

GVM, Heavy vehicle

Dodge RAM 3500 — GVM upgrade to 6.1t with a 3,500kg rear axle rating, certified under VSB6 (D3, E3, F1, G4, J1, M1, P1, S1, S2) with full engineering evidence package covering suspension substitution, brake system re-certification, and ADR compliance across all applicable rules.

Read the whole story

F350 Upgrade to 6.1t

Queensland

GVM, Heavy vehicle

Chassis, suspension and brake upgrade to support a fully touring-fitted setup.

Frequently asked questions

How long does the engineering process take?

Timeframes vary depending on the complexity of the project and the documentation required. Straightforward inspections may be completed quickly, while more complex engineering assessments or custom modifications require additional analysis and documentation. Furthermore, difference in wait times are dependent on the regulatory body providing the approval. Each State and Territory has its own body, as does the federal system.

How much does a GVM upgrade cost?

Total cost = engineering certification +shop install. Engineering certification starts anywhere between $1,990 and $5,990 depending on your vehicle type, complexity, and whether there are type approvals available in your state or territory. Shop installs vary from $2,500 to beyond $50,000 depending again on type of vehicle and modifications required/desired. Call us to discuss.

Is your vehicle suitable for a GVM upgrade?

Possibly. It depends on the vehicle model, chassis, suspension, axle limits, brakes, tyres, and intended use. We review those factors to confirm whether a GVM upgrade is suitable and what certification is needed. See our GVM Upgrade Finder tool or call us to discuss.

How do GVM and GCM differ on your vehicle?

GVM is the maximum weight your vehicle can carry when loaded. GCM is the maximum combined weight of the tow vehicle and trailer together. A GVM upgrade may not change GCM. We can help you work out what applies to your setup.

Will a GVM upgrade increase my towing capacity?

Not necessarily. A GVM upgrade increases the maximum allowable weight of the vehicle itself, but it does not automatically increase towing capacity or Gross Combination Mass (GCM). Every vehicle has specific limitations, and these should be considered when planning modifications or towing heavier loads.

What information do I need to get a quote?

To provide accurate advice, we'll generally need:Vehicle make, model and yearVIN (if available)Registration state or territoryDetails of any existing or planned modificationsIntended use (touring, towing, commercial, etc.)Providing this information upfront helps us identify the most suitable engineering pathway and provide an accurate quotation.

What's the difference between pre-registration and post-registration GVM upgrades?

Pre-registration GVM upgrades are done before the vehicle is registered and are often part of a Second Stage of Manufacture (SSM). Post-registration upgrades are performed on already registered vehicles and may have different compliance requirements.

How much can I increase my GVM?

The amount you can increase your GVM depends on your vehicle's make, model, and structural capacity. A licensed engineer can assess your vehicle and determine the maximum allowable GVM.

Can I get a GVM upgrade after my vehicle is registered?

Yes, GVM upgrades can be performed on registered vehicles. However, the process and requirements may vary depending on your state or territory.

Does a GVM upgrade increase my GCM?

No, a GVM upgrade does not automatically increase your GCM (Gross Combination Mass). GCM is determined by the vehicle manufacturer and may require separate certification.

What is a GVM upgrade?

A GVM (Gross Vehicle Mass) upgrade increases the maximum allowable weight your vehicle can carry when fully loaded. This is achieved by modifying components such as suspension, brakes, and axles to meet higher load requirements.

Does a GVM upgrade affect insurance?

Yes, a GVM upgrade can affect your insurance. It's important to inform your insurer about the modification to ensure your policy remains valid.

Is a GVM upgrade legal in Australia?

Yes, GVM upgrades are legal in Australia, provided they comply with the Australian Design Rules (ADRs) and state or territory regulations. Certification by a licensed engineer is typically required.

Can I reverse a GVM upgrade?

Yes, a GVM upgrade can be reversed, but it requires re-certification to ensure the vehicle complies with its original specifications.

Does it affect warranty?

A GVM upgrade may affect your vehicle's warranty, especially if the modifications are not approved by the manufacturer. Check with your dealer or manufacturer for details.

Does it affect resale value?

A GVM upgrade can affect resale value positively or negatively, depending on the buyer's needs. Some buyers may value the increased capacity, while others may prefer an unmodified vehicle.

What modifications are normally required?

Common modifications for a GVM upgrade include upgrading the suspension, brakes, and axles to handle increased loads. Additional components may also be modified depending on the vehicle.