About us

We live for exploration and experiencing the great outdoors. We enjoy spending time in our trucks and believe in innovation, quality, and value across our product lines. In fact, these are the core pillars of our business, just like they were when the company was founded back in 1958 by Guenter Jacob.


Guenter was born in Germany, and precision engineering was in his nature. During the second World War, Guenter was imprisoned in Auschwitz for four years and survived due to his exceptional spring making skills. Following the liberation from the horrors of Auschwitz, Guenter emigrated to Melbourne, Australia and continued his craft of making performance springs for the military, Ford Motor Company, and Mack Trucks.

In 1958 Jacob Spring works was formed, Guenter later became known as the Ironman, which eventually became our brand name.


The company took shape as JSW Parts, (short for Jacob Spring Works) in 1982 to design and supply leaf and coil springs for cars, trucks, buses and 4×4 vehicles. JSW Parts soon became well known as a manufacturer and supplier of suspension parts all around the world.

With the growth of 4×4 vehicles, we expanded our suspension offering from coil and leaf springs into shocks and a full complement of products for the best-known vehicle manufacturers in the world. To this day, Ironman 4x4 still designs and develops products for various armed-guard and military divisions around the world, where strength and dependability are paramount.


Ironman 4×4 provides great value for money solutions for all sectors within the 4×4 industry, with a versatile and forward thinking approach, whether it be recreational, military or commercial use we at Ironman 4×4 can safely say that you are using world class products.