I used mine on a stock flyheel for about a year and had no problems.

They are very streetable clutches although it takes a minute to get used to the engagement...but it isn't as severe as people think it is. If you let off wrong you will feel a bit of a stutter but you learn to manage it so that it doesn't happen at all in a rather short period of time.

I daily drive mine and have been using the 6 puck clutch for nearly 2 years now both on the strip and the street and have felt no fade as of yet.

My personal opinion is that it is a good and rather inexpensive investment.