If the flywheel, the disc and the clutch plate, are not made out of high quality materials with top level durability then it is most likely that the vehicle will lose power and at the same time the clutch pedal will function hardly and with great difficulty turning driving into a very tedious operation.

The gearbox is literally the energy conversion of the engine’s power into mechanical motion. Is the velocity convertor coming from the engine and going to the wheels.

Any vehicle regardless if it has an automatic or manual gearbox has a clutch or more precisely clutches.

The drive of all vehicles depends on the condition of the clutch and the excellent grip of the disk and the flywheel.