A GCM (Gross Combined Mass) revision is available with selected Lovells GVM upgrades, providing a complete solution for drivers who need more capacity when towing and carrying heavy loads. A GVM upgrade is the first step, ensuring your vehicle can legally handle increased payload. In conjunction with this, a certified GCM revision can extend your combined vehicle and trailer limit, helping you stay compliant, insured, and in control. Designed for popular 4WDs, utes and SUVs, Lovells upgrades give you the confidence to load up, tow further, and do it all safely.
A Gross Combination Mass (GCM) revision is an engineering upgrade that increases the maximum legal weight of your vehicle and trailer combined. It allows you to safely and legally tow more when paired with a Lovells GVM upgrade.
Gross Combination Mass “GCM” = Sum of all axle loads; vehicle and trailer
A GVM upgrade increases how much your vehicle can legally carry, while a GCM revision increases the combined legal weight of the vehicle and trailer together. A GCM revision is only available when paired with a Lovells GVM upgrade.
Yes. A GVM upgrade is the first step. Only once your vehicle’s Gross Vehicle Mass is upgraded can a certified GCM revision be applied. Lovells offers complete packages that deliver both upgrades together on approved models.
Revising a vehicle’s Gross Combination Mass (GCM) is not a simple modification. It requires various approvals, rigorous engineering validation, and strict compliance with the Australian Design Rules.
Lovells is authorised to deliver certified GCM revisions because we have invested in the testing, approvals, and compliance pathways needed to meet these requirements. Every Lovells GCM revision is validated for startability, gradeability, stability, braking, thermal management, and chassis integrity — ensuring absolute safety, legality, and reliability.
That’s why Lovells is trusted as the recognised authority for increasing both GVM and GCM across Australia’s most popular 4WDs, utes, and SUVs.
Manufacturer claims like “3.5 tonne towing” and “one tonne payload” don’t account for GCM. In reality, you usually can’t carry maximum payload and tow maximum weight at the same time. A GCM revision helps unlock more usable capacity while remaining compliant.
Lovells provides GCM revisions for many popular 4WDs, utes and SUVs, including Toyota LandCruiser, Ford Ranger, Mazda BT-50, Isuzu D-Max, RAM, and more. Availability depends on the vehicle model and build date.
Lovells GCM revisions are available in two pathways, depending on whether your vehicle is brand new or already registered:
Pre-registration (new vehicles):
A Lovells GVM upgrade with an accompanying GCM revision can be fitted before first registration. Once certified, the higher GVM and GCM figures are entered onto the compliance plate and recognised nationally from day one.
Post-registration (in-service vehicles):
For vehicles already registered, a Lovells GVM upgrade and GCM revision can be installed through the Lovells dealer and franchise network. These upgrades are certified under individual state and territory schemes, ensuring your vehicle remains compliant and road-legal across Australia.
⚠️ Important note for Western Australia and Queensland: Not all models are yet available for post-registration GCM revisions in WA and QLD. Availability depends on the specific vehicle, build date, and state compliance approvals. Contact your local Lovells dealer to confirm eligibility before booking.
Carry more legally—tools, camping gear, fridges, rooftop tents, drawers, long-range tanks, passengers, and more.
Every Lovells GCM Revision complies with Australian Design Rules.
Kits are developed using local testing, FEA analysis, and real- world data to ensure durability and reliability under constant load.
Kits available for pre-rego or post-rego compliance depending on your state or territory. Approved for use across Australia.
Maintain proper braking, handling, and tyre performance under increased load with a fully engineered upgrade.
Maintain or increase ride height to suit heavy accessories and constant loads—ensuring safe clearance, balanced stance, and proper suspension geometry.
Enhanced control under load— reduced body roll, improved steering, and more stable braking even with GVM at maximum capacity.
Certified to carry more. Lovells GVM kits legally increase payload capacity to suit trade, fleet, or touring needs—without compromising safety.
Tuned suspension delivers a stable, predictable ride—even when fully loaded—minimising fatigue on long hauls or rough terrain.
Lovells springs are available for a wide range of vehicles- from 4×4 utes and wagons to SUVs, commercial vehicles, and heavy duty towing rigs. If it needs support, Lovells is up to the job.
