Anything more than 300 ft/lbs through a standard box you're on borrowed time, but saying that as said its a lot to do with driving style, I had 400ft/lbs on a standard box and organic plate have just removed it and I'm selling the gear kit on the bay as its still in working condition.

Have just had my gearbox built using the oppliger big tooth kit and have gone for the ap 6 paddle, best value for money box on the market imo


Luciano