I got like 60 hours of 4.5k engaging 5k slipping on a 50cc 45mph bike with a 3 shoe lightened and braced with no pad issues. I was running it with 10w30 motul and off the line if you gunned it it would rev out to 6k then slowly engage and pull down to 4.5-5k then fully engage. I plan on using it this season again but on a 70cc bike this time.