Unleash the Full Potential of Your Chevy Silverado 1500 2019 - 2026
Stop worrying about weight limits and start adventuring with confidence. Offroad Industries (ORI) offers the most comprehensive, Federally Approved GVM (Gross Vehicle Mass) upgrades for the Chevy Silverado 1500 (LTZ, Trail Boss, and ZR2).
By bundling the ORI GVM Packages & GCM testing and the combination of LS16 certification, you are offering a legal "Super-Truck" status. The LS16 code is the secret sauce here: it’s the specific modification code for Gross Combination Mass Re-rating, ensuring the truck, the gear, and the massive 4.5T trailer are all
100% legal together for either PRE or Post Rego
Whether you’re a weekend explorer, a tradie with a heavy load, or a serious tourer towing a 4.5T caravan, our staged packages transform your truck’s legality, safety, and performance.
*Please note that some workshops may apply additional discretionary administration fees to the quoted installation and engineering price. Additionally, all post-registration GVM upgrades will incur extra shipping fees.
ORI GVM & GCM PACKAGES
The perfect entry point for those needing a legal payload boost without a major lift.
- GVM Increase: Up to 3650kg (approx. 1077kg payload).
- Key Features: Fox 2.5 Performance Series shocks and ORI 200kg heavy-duty leaf packs matched with heavy duty BDS control arms.
- Best For: Daily drivers and light towing where you need to clear the "one-tonne" mark for tax purposes (ATO compliance) or carry extra tools/gear legally.
- Benefit: Maintains a lifted stance with premium usa made shocks, while significantly improving stability under load without the need of purchasing load rated wheels.
Increased strength without the cost of replacing all your suspension + legal one tonne payload.
- GVM Increase: 3650kg.
- Key Features: Adds BDS Upper Control Arms and a leveling kit (or 2" lift options) retains the factory Multimatic Suspension
- Best For: Chevy Silverado ZR2 owners only need to clear the "one-tonne" mark for tax purposes (ATO compliance) or carry extra tools/gear legally.
- Benefit: Enhanced front-end strength and wheel travel, ideal for ZR2 owner who retain the OEM suspension yet get 1 tonne payload.
Engineered for the ultimate suspension,
- GVM Increase: 3850kg (approx. 1272kg payload). GCM Increase 8050 KG ZR2 or 8350 LTZ
- Key Features: Premium Fox 2.5 DSC (Dual Speed Compression) adjustable shocks.
- Best For: Heavy-duty touring. If you have a, bull bar, and a heavy tow ball weight from a large caravan, this is your sweet spot without having to upgrade your wheel and tyre package.
- Benefit: The DSC adjustability allows you to "dial in" your ride—stiffen it for the highway and soften it for the tracks at the turn of a knob. Fox’s premium shocks setup for the Chevy Silverado 1500.
Maximum legal capacity for the most demanding builds. Ideal for Tray Canopy builds and for the customer who wants to run 35" Tyres legally.
- GVM Increase: 4250kg (approx. 1672kg payload) upto GCM Increase rating 8750kg * ZR2 8450kg.
- Key Features: Fox 2.5 Performance Elite suspension, ORI 400kg leaf packs, and required load-rated wheels/tyres.
- Best For: Fully built rigs with rear drawer systems, rooftop tents, and long-range tanks or the ultimate tourer with Tray and Canopies fitted.
- Benefit: Massive payload increase that transforms the Silverado into a true heavy-duty platform while retaining 4.5T braking towing capacity.
- Note: Chevy Silverado ZR2 has reduced GCM due to the 4.2T towing capacity.
The pinnacle of Silverado suspension engineering.
- GVM Increase: 4250kg.
- Key Features: Fox 3.0 Internal Bypass Race Series Shocks (front and rear).
- Best For: The enthusiast who wants it all—maximum legal payload combined with race-bred suspension technology.
- Benefit: The 3.0 Bypass shocks offer unparalleled heat dissipation and damping control. It’s the ultimate "go-anywhere" setup that remains legally compliant across Australia.
Note: Chevy Silverado ZR2 has reduced GCM due to the 4.2T towing capacity.
ORI Chevy Silverado GVM & GCM Specfications
8050 KG ZR2
8450 KG ZR2
8450 KG ZR2
LT275/70R18
35x12.5R18
35x12.5R18
CHV-1500-Stage4-GVM-400
CHV-1500-Stage5-GVM-400
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