Upton

During the 1970s, Upton Engineering, located in New South Wales, Australia, achieved global recognition for crafting the most substantial two-wheel drive tractors ever conceived. The company's origins in the 1960s saw them ingeniously repurposing surplus components from military tanks for their initial tractor designs. This evolved into leveraging durable construction equipment sourced from trucks, culminating in the formidable Upton HT-14/350 – a massive, 51,000-pound two-wheel drive machine equipped with robust earthmover tires. Though tractor production ceased around 1980, Upton Engineering persevered, shifting its focus to the manufacturing of advanced irrigation systems.