GVM Suspension Upgrade to suit Toyota LandCruiser VDJ78 / VDJ79 Series – (3950kg) (Pre-Rego Kit)
Vehicle GVM Increase
3510kg OEM / 3950kg GVM Upgrade
GVM Axle Load Increase
Front Axle Load – 1480 / 1730kg (OEM / GVM Upgrade)
Rear Axle Load – 2300 / 2420kg (OEM / GVM Upgrade)
Marks4WD offers model-specific Terrain Tamer GVM suspension upgrade kits for popular 4WD vehicles, safely increasing your vehicle’s payload capacity and enabling you to carry additional accessories and equipment while maintaining optimal safety and performance.
Terrain Tamer boasts over 50 years of hard-earned expertise and innovation in the aftermarket 4WD parts industry, with their products being sold in more than 80 countries worldwide in applications ranging from mining and military to 4WD enthusiasts.
Pre-Rego GVM Kits are installed pre-vehicle registration via the federal SSM approval program and must be installed at our Marks4WD workshop in Dingley Village, Melbourne in order to meet the SSM approval requirements.
Online Ordering
After purchase, our suspension specialists will be in contact to confirm the kit you have purchased best suits your requirements and vehicle loads.
What is a GVM Upgrade?
- GVM (Gross Vehicle Mass) is a rating set by the original manufacturer and refers to the legal maximum total weight of the vehicle. This includes the weight of the vehicle itself, the bull bar, fuel, water tank, cargo, etc and includes the driver and passengers. Think of it as the maximum load your vehicle can safely carry.
- The GVM also determines the imparted Tow Ball Mass when towing and Rated Axle Capacity, which limits how much weight should be distributed to each vehicle.
- A GVM Upgrade includes upgraded suspension components to legally increase a vehicle’s carrying capacity and ensure safety and performance when carrying heavier loads.
Why Upgrade your GVM?
- Increased Payload Capacity > Carry more camping gear, recovery equipment, or heavy trailers without compromising your vehicle’s stability or performance.
- Improved Off-Road Capability > A higher GVM enables you to tackle more challenging terrain with confidence, knowing your vehicle can handle the weight of additional accessories and modifications.
- Enhanced Safety > By ensuring your vehicle is legally equipped to handle the loads you carry, you’re prioritizing safety both on and off the road.
- Legality > Driving a vehicle with an overloaded GVM can lead to fines and invalidation of your insurance.
What is Pre-Registration?
- Pre-registration fitment is when the GVM upgrade has been pre-tested and is federally compliant across all Australian states, known as Second Stage of Manufacture (SSM) approval.
- After our approved installers have installed your kit, a new compliance plate for the GVM upgrade is fitted prior to vehicle registration.
What is SSM (Second Stage of Manufacture?)
Second Stage Manufacturing is a process where additions or modifications are made to a new, unregistered vehicle. (Commonly referred as “Pre Rego”)
These modifications become part of the new vehicle’s original specifications before its first registration. A common example is installing a GVM suspension upgrade to increase the vehicle’s legal axle load capacity.
Key Benefits of SSM
- Nationwide Recognition: The approval is valid across all Australian states and territories
- Permanent Compliance: The certification remains valid even if the vehicle is deregistered and re-registered
- Interstate Transfer: Vehicles can be transferred between states without requiring re-engineering
Important Requirements: The vehicle must be unregistered and have no modifications other than the approved GVM upgrade kit when first registered.
Once completed, the vehicle maintains full compliance across all states unless further modifications are made outside the original approved design.
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Vehicle Height Increase
- Front – 35mm*
- Rear – 40mm*
- Front 4cyl vehicle – 28mm*
- Rear 4cyl vehicle – 40mm*
- * Approx heights – unladen without accessories
What is Included in the Kit?
- Front
- TGS Series Shock Absorbers
- Smart Coil Springs
- Or Heavy Duty Coil Springs
- Rear
- TGS Series Shock Absorbers
- Constant Heavy Duty Leaf Springs (500kg)
- Or – Parabolic Leaf Springs – Extra Heavy Duty (700kg)
- Poly Pro Bush kit, U-bolts
- Greaseable Pins and Shackles
- Additional
- Rear Heavy Duty 30mm Sway bar kit
Parabolic Leaf Springs Explained
Installation
As an authorized Terrain Tamer installer, Marks4WD provides installation of your GVM suspension kit by our trained technicians.
Following your purchase, our suspension experts will personally contact you to confirm your vehicle details and requirements. This ensures you receive the correct GVM upgrade kit, and we can then schedule your installation at a convenient time.
Upon completion, we will provide all the necessary approval documentation covering your Pre-Registration GVM suspension kit.
Suspension Options Explained
Heavy Duty Leaf Springs
Terrain Tamer’s leaf springs feature integrated anti-friction pads, strategically placed between each leaf and on either side of the spring. These pads prevent friction and the resulting annoying noises common in standard leaf designs, while ensuring long-lasting and quiet performance.
- Reduced noise for a more comfortable ride
- Hard-wearing and durable built-in anti-friction pads.
- Designed to withstand the demanding conditions of both highway and off-road terrain across Australia.
- 12 Month Warranty
Parabolic Leaf Springs
Terrain Tamer Parabolic Leaf Springs delivers superior ride comfort through a modern take on a classic design. Their innovative parabolic construction ensures a smooth, consistent ride, regardless of whether your vehicle is carrying a full load or running empty.
- Provides for greater suspension travel/articulation with increased stability.
- Lighter – Less unsprung weight compared to heavy-duty leaf springs
- Reduced shock load transmitted to the vehicle
- Greatly increased Comfort (especially with light loads)
- Exceptional load-carrying capability
- 12 Month Warranty
Coil Springs (Heavy Duty)
- Australian Made
- Phosphate coated & finished with Expoxy Powder coated for maximum protection
- Highest Quality High Stress Spring Steel
Smart Coil Springs
Engineered with V8 racing-inspired progressive rate technology, the Australian-made Terrain Tamer front coil springs feature an innovative tapered wire design. The unique construction allows the spring rate to automatically adjust with load, significantly reducing body roll while improving vehicle control and ride comfort.
- Progressive rate technology using a Tapered wire design
- Australian manufactured
- Enhanced vehicle stability
- Reduced body roll
- Premium X5K Spring Steel construction
- Life Time Warranty – Original Owner
Shock Absorbers
The Terrain Tamer TGS series expanded body performance shock absorber feature a large 40mm bore, 60mm outer body, 20mm chrome hardened shaft, twin tube and multistage valving for the best all-round performance.
- 40mm bore diameter with a 60mm outer body
- 20mm chrome hardened shaft
- Twin Tube design
- Double welded eyelets for maximum strength
- Multistage valving system
- German-manufactured Nitrile seal
- 3-year Warranty
Terrain Tamer Pro Bushes
- Low Maintenance
- Bushes only require greasing during installation.
- Designed for Australian conditions- Do not break down and crumble in high humidity.
- Oil, Chemical & Weather resistant
- Improved handling, steering response and road-holding stability
Smart Coils Explained
Warranty
- 3 Years
- 100,000Km
To Suit – Toyota LandCruiser
- VDJ78 Troop Carrier
- VDJ79 Single Cab
- VDJ79 Dual Cab
- 11/2022 – On
Part No.
- SK0072GVMPR-KIT
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