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Tough Dog

Tough Dog 40mm Lift Kit for D-MAX

Suits: Isuzu D MAX-(2020-2023) • Isuzu D MAX-(2012-2020)
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Available to Order The part is ordered in as required from our supplier. Usually 2-5 business days, if in stock.
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SKU: TD-ISU-DMAX-RT-16
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SKU: TD-ISU-DMAX-RT-16
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$9,595.00
-5% $10,100.00 $9,595.00
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This kit does not contain additional parts.

Tough Dog 40mm lift kit for Isuzu D-Max RT (04/2016-08/2020)

Engineered for serious off-road performance, the Tough Dog Suspension Lift Kit delivers the strength, control, and reliability you need to tackle Australia’s harshest conditions and beyond. Backed by over 40 years of suspension expertise, Tough Dog has been proven across deserts, mountains, and backcountry tracks in more than 55 countries worldwide.

Designed and developed by passionate 4WD enthusiasts in Australia, every component in this kit is built to handle real-world punishment while maintaining comfort and control on and off the road.

Tough Dog Premium Shock Absorber Options

Choose from Tough Dog’s specialised shock range, designed to suit everything from daily driving to extreme off-road use:
  • Foam Cell Shocks – Durable twin-tube design using foam cell technology to eliminate fade and deliver consistent performance in harsh conditions
  • 9-Stage Adjustable Shocks – Easily dial in your ride comfort and control with adjustable damping to suit varying loads and terrain
  • Big Bore Adjustable Shocks (45mm) – Larger bore and increased oil capacity for improved heat dissipation, making them ideal for heavy-duty applications and demanding off-road conditions
  • Ralph Big Bore Shocks (50mm) – Maximum performance foam cell shocks with oversized components for superior strength, cooling, and reliability in extreme environments

All Tough Dog 4x4 shocks feature:

  • Twin tube construction
  • High-temperature, all-weather oil
  • Hydraulic rebound stops for added protection
  • Reinforced, welded mounting points

Tough Dog 4X4 Coil Springs

Tough Dog springs are manufactured in Australia using micro-alloyed spring steel for maximum durability and performance:
  • Coil springs designed for superior ride comfort and load handling
  • Shot peened, scragged, and load tested to maintain strength under extreme use
  • Retains original spring memory even under heavy loads
  • Wide range of lift heights and load ratings available

Tough Dog 4x4 Leaf Springs

Tough Dog leaf springs are engineered in Australia to deliver strength, durability, and ride comfort across a wide range of applications—from daily driving to fully loaded touring and heavy-duty work setups.
  • Progressive Rate Design – Each leaf is precisely formed and set at varying heights to ensure full-length contact, delivering a smooth, controlled ride when unladen and increased support as load is applied
  • Single & Dual-Stage Options – Available in single-stage for lighter applications or dual-stage configurations where secondary leaves engage under load to reduce sag and improve stability
  • Improved Load Handling – Designed to maintain ride height and minimise stress on the primary leaves, even under constant heavy loads
  • Built for Harsh Conditions – Proven performance in extreme off-road environments, from corrugations to heavy towing and long-distance touring

Why Choose a Tough Dog Suspension Lift Kit?

From the Australian outback to global off-road trails, Tough Dog suspension has been tested where it matters most. This lift kit gives your 4WD the confidence, capability, and durability to go wherever the track leads!

Note: Lift kit image is for reference purposes only, actual kit components may vary.


Need help choosing the right kit for your 4x4? Get in touch with our team of 4x4 suspension experts on 1300 742 016 or by filling out the contact form below.
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Direct Suspensions proudly supports the aftermarket accessory industry. As such, none of our products are made by, or sponsored products of Toyota, Isuzu, Ford or any other vehicle manufacturer.