Genuine cable is a must as the other types make it REALLY heavy and will either snap or collapse the ratchet on the pedal. Its a tricky route, especially at the pedal end so id advise saving time and skin off ur hands and get a renault dealer to do it in half an hour or so, with a box oil change. Ended up going the new clutch route once mine didnt like going into reverse, have had no probs since.