How much power can a gear set take?
This depends on the manufacturer and is something to be discussed with the manufacturer or retailer. Not all manufacturers and retailers publish power levels for their particular gear sets and even when they do, these are considered estimates. The following are published power levels for a few popular gear sets: a. APS: 325 ft lbs b. PAR: 450 HP/400 ft lbs TQ c. STi: 350-375 WHP d. TurboXS: Over 300 WHP Though these figures seem like concrete data to support your particular vehicle’s HP or TQ figures, shock load is the PRIME indication of when a gear set will fail.