I have it with the matching flywheel from RPS (thanks Greg Dupree) and I really like it. Its really only stiff before you turn on the car. Once the vacum assist is going its not bad at all. I really like it. It feels solid not stiff (at least to me). Although after I am used to it the stock cluch in my WS6 feels like a flimsy toy.... Eitherway it slips fine is NOT on/off and very very streetable. I have been stuck in rushour many times and never had a swore leg. To sum it up - I think the stiffness is perfect. I was afraid it would be too stiff too, before I installed it but its really not bad at all. Although it seems to be kind of a pain to get it adjusted just right. Ask aliaz about that....