Had the ACT HD and currently have the RPS Max Street. Act is easier to install 'cause you don't have to install a new slave cylinder, bleed the clutch or adjust the pedal. RPS you do. The pedal is stiffer with the ACT but for me it chattered quite a bit initially. After it was broken-in it seemed to chatter only at starting it up in the morning and more so when it was cold out. My ACT lasted me about 30k. The RPS I have now doesn't chatter at all but the pedal is softer. I have about 4K on it now.
:I am in need of replacing my clutch. I am looking for a clutch that can comfortably hold 400 hp. I am considering ACT or RPS. Can anyone give me feedback to which is better. I would love having a stiffer sports feel to my pedal. Also does anyone now where is the best place to pick one up. Any help would greatly be appreciated. :Thanks!