Nets SERIES OF TRACTORS It is done with a reason to achieve a performance of the energy package with an HP range of 22 HP-30 HP. Farmtrac 6055 price The series of heritage tractors are 4-wheeled tower drive tractors with an HP range of 60 HP to 90 HP. The next series is the FarmRAC series that is designed for the purposes of agriculture and industrial needs. This series of tractors are available in an HP range of 47HP to 120 HP.