TSA Stage 2 GVM Upgrade Package – Chevrolet Silverado 1500 (4.2 T GVM | APEX 2.5 MRR | +200 / +400 / +600 KG | SSM Approved)

TSA Chevrolet Silverado 1500 Stage 2 GVM Upgrade – 4.2 T GVM (APEX 2.5 MRR | +200 KG / +400 KG / +600 KG | SSM Approved)

Upgrade your Silverado 1500’s carrying capacity, strength, and compliance with the TSA Stage 2 4.2 T GVM Upgrade Package. This federally approved pre-registration upgrade delivers exceptional performance and control with APEX 2.5 MRR adjustable suspension, increasing your GVM to 4,200 KG and enabling the use of 35” tyres — without compromising comfort or drivability.

With up to 600 KG constant load options, a rear axle upgrade to 2,450 KG, and a category change from MC to NB1, this package provides serious touring and towing capability while retaining factory towing limits of 4.5 T (LTZ) or 4.2 T (ZR2) — giving you a combined mass of up to 8,700 KG (LTZ) or 8,400 KG (ZR2).

Inclusions:

• APEX 2.5 MRR Front Coilovers (Left & Right) – fully adjustable remote-reservoir dampers for superior control, fade resistance, and load handling

• APEX 2.5 MRR Rear Shocks (Pair) – performance-tuned monotube shocks for consistent damping and comfort under heavy load

• Upgraded Upper Control Arms – correct geometry and alignment for improved steering and handling under lift

• EFS Rear Leaf Pack (0–200 KG / 400 KG / 600 KG Constant Load +50 MM Lift) – selectable configurations for varied touring or work applications

• EFS Bush Kit and U-Bolts – complete hardware and bushing package for strength and compliance

• SSM Federal Engineering Compliance – pre-registration certification included

Requirements & Details:

• Tyre Approval: 35 × 12.5 R18 with minimum 1,240 KG load rating

• Category Change: MC → NB1

• Rear Axle Load Rating: increased to 2,450 KG

• Load-Rated Wheels & Tyres Required

• Price: $14,150 AUD – includes product, installation, and federal compliance (inc. GST, excl. freight)

• Post-Registration Engineering: Additional fee applies (data correction required for certification)

The TSA Stage 2 4.2 T GVM Upgrade is designed for serious payload and touring performance, combining federal compliance, premium APEX suspension, and engineering-approved load capacity in one complete solution — ready for the road, or well beyond it.

Everyday Offroad and TSA deliver engineered, tested, and federally approved GVM upgrade solutions for Chevrolet Silverado 1500 LTZ and ZR2 models — built tough for Australian conditions.