In many places on this website you will see power ratings such as 350-500+ whp. What does the plus mean? Basically it means "it depends." Specifically it depends on how you use or treat the car. In the example of a our Stage 4 clutch the 500+ means we have never seen a problem below that number. If it will handle more is up to you and how you are using the car. Daily driving with 600whp the clutch does fine, drag racing with sticky tires at that level it's going to slip some.