at least 20k miles. I did swap it only only because the trans was shot. The clutch I gave away and it was NOT slipping when I took it out inlcuding some track time. I am on my second and I am around 470 rwhp. You may want to check something else or a defective clutch perhaps from the factory? RPS def makes a strong clutch.
****472 RWHP/461 TORQUE ON 110 RACE GAS @21 PSI ****438 RWHP ON 93 OCTANE PUMP GAS/STOCK MOTOR**** ****429 FT LBS/TQ*******************************