next class: PRO-STOCK TRACTORS ❯
- Open Modified tractors are those using any combination of Automotive, Marine, Aircraft or Turbine engine(s), transmission(s) and final drive. There is no limit to the engine capacity. Blowers and Turbo-charging is permitted.
- Weight class is: 4000kg, excluding driver.
- No portion of a limited modified tractor may exceed 14 feet forward of the centre of the rear wheel, including removable ballast.
- Maximum width of vehicle is to be 8 feet at its widest point including ballast.