GVM 4495 kg (stays NB1) | GCM 12,474 kg
Stage 5: 6.5" Summit Spec
Stage 5 of Offroad Industries' SSM NB1 lift program for the Chevrolet Silverado 2500HD LTZ (2020–2026). It gives the truck a 6.5in (torsion) lift and clearance for 37in (37x12.5 or 37x13.5 R18/R20); zero offset, while keeping the vehicle at 4495 kg GVM — so it stays in the NB1 light-vehicle category and can still be driven on a standard car licence.
Who it suits: Maximum torsion-bar height on 37s, still car-licence legal.
Specifications
| Vehicle | Chevrolet Silverado 2500HD LTZ · 2020–2026 |
|---|---|
| Factory rating | 4,495 kg GVM (NB1) · 12,474 kg GCM · about 733 kg payload |
| Upgraded GVM | 4495 kg (stays NB1) |
| Upgraded GCM | 12,474 kg |
| Payload | 633 kg |
| Lift | 6.5in (torsion) |
| Tyres | 37in (37x12.5 or 37x13.5 R18/R20); zero offset |
| ORI part number | CHV-2500-STAGE-5-NB1 |
What's in the package
- BDS 6.5in torsion kit (BDS1823FPE)
- Fox 2.5 Performance Elite front & rear
- BDS upper control arms
- Husky Extenda flares
- ORI mud flap brackets
- ORI ADR lights
Approval & compliance
SSM federally approved, PRE-rego only; stays NB1 at 4495 kg GVM (standard car licence); GMSV vehicles
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.