4WD Upgrades

Premium 4WD Suspension & Upgrades – Built for Adventure, Backed by Expertise

At Kropps Mechanical, we’re proud to be an authorised installer of Cal Offroad an exclusive Australian importer for some of the world’s most trusted 4WD and off-road brands—including Fox Shocks, CalOffroad Platinum Bilstein, SPC, Smittybilt, and more. If you’re looking for top-tier suspension and upgrade solutions, you’ve come to the right place.

Unrivalled Suspension Performance

What truly sets us apart is our commitment to exceptional performance, durability, and innovation. We don’t just fit parts—we deliver fully engineered solutions designed to withstand Australia’s toughest conditions.

CalOffroad is the only brand in the country offering a genuine 3-inch suspension system, co-developed by the experts at Fox Factory (USA) and Bilstein (Germany). These advanced systems are engineered for popular 4WDs, including:

Toyota Hilux

Toyota LandCruiser 79 Series

Nissan Navara NP300

Ford Ranger

And more…

Engineered for Australian Conditions

Years of hands-on development and testing at our private off-road test facility have allowed us to create some of the most advanced and high-performing 4WD suspension systems in Australia—and the world. Whether you’re touring remote tracks or tackling rugged terrain, our upgrades deliver the control, comfort, and reliability serious off-roaders demand.

Why Choose Kropps Mechanical for Your 4WD?

Exclusive access to Fox Shocks & CalOffroad Platinum Bilstein

Expert installation by passionate 4WD technicians

Designed & tested for real Australian conditions

Custom upgrades for leading 4×4 makes and models

Smoothest ride. Toughest gear. Proven performance.

Ready to upgrade your 4WD? Discover the difference with Kropps Mechanical and experience the smoothest, most capable ride on (or off) the road.