GVM 3650 kg | GCM 7160 kg (BTC 4200 kg)
Stage 4 ZR2: 4in BDS Lift | 3650 GVM | 37in Tyres Legal
Stage 4 ZR2 of Offroad Industries' SSM NB1 lift program for the Chevrolet Silverado 1500 (LTZ, Trail Boss & ZR2) (2019–2026). It gives the truck a 4in (6in kit overall) lift and clearance for 37x12.5R18 / 37x12.5R20 (load-rated wheels required), while keeping the vehicle at 3650 kg GVM — so it stays in the NB1 light-vehicle category and can still be driven on a standard car licence.
Who it suits: ZR2 owners wanting 37s on a legal drive-away build.
Specifications
| Vehicle | Chevrolet Silverado 1500 (LTZ, Trail Boss & ZR2) · 2019–2026 |
|---|---|
| Factory rating | 3,300 kg GVM · 7,160 kg GCM · about 757 kg payload |
| Upgraded GVM | 3650 kg |
| Upgraded GCM | 7160 kg (BTC 4200 kg) |
| Payload | 929 kg |
| Lift | 4in (6in kit overall) |
| Tyres | 37x12.5R18 / 37x12.5R20 (load-rated wheels required) |
| ORI part number | CHV-NB1-Stage4-ZR2 |
What's in the package
- BDS 6in kit with Fox 2.5 Performance Elite (BDS782FPE)
- BDS control arms (BDS121260)
- Rough Country SF1 flares
- ORI front & rear mud flaps
Approval & compliance
SSM federally approved Australia-wide, PRE-rego only (VTA-064440); stays NB1 (car licence)
Everything that goes into Stage 4 ZR2
Why get it fitted by Project Overlander
Fitted in-house
Your package is installed by our own technicians at Smeaton Grange — the same team that builds our full American truck touring setups.
Engineering handled
We take care of the ORI approval paperwork, plates and certification, whether the truck is pre-registration or already on the road.
Build it once
Pair the upgrade with trays, canopies, long range tanks, awnings and 12V from the same workshop — one booking, one warranty contact.
Price is for the package supplied, fitted and engineered. Post-registration upgrades attract additional state engineering and registration fees. Some stages need load-rated wheels and tyres. Final specification is confirmed at quote, based on your vehicle's build and compliance plates. Offroad Industries (ORI) is an independent Australian brand; Project Overlander is an authorised installer.