1. Chassis Frame: - it is backbone of vehicle. all sub systems mounted on chassis frame

2. Engine:- it is heart of vehicle. It is device which converts chemical energy into mechanical energy by the process of combustion which is than propulsion of vehicle.

3. Clutch:- It is device which engage & disengage engine power to gearbox while shifting gears

4. Gearbox:- It vary torque & speed as per requirement.

5. Propeller Shaft:- It transmits power of gearbox to differential.

6. Final Drive:- it turn power in 900 ,do some permanent speed reduction, increase & decrease speed of outer & inner wheel while taking turn.

7. Wheels & Tyres:- it carry weight of vehicle , transmit driving thrust, absorb road shocks