What is the difference between the performance street disc in the ACT HDSS kit and the stock street disc in the ACT HD00 kit? Both use the same ACT heavy duty pressure plate, but the difference is the clutch disc and $60. I know the HDSS is the better overall kit, but I want to know what I lose if I pick the HD00 kit over the HDSS kit? Both kits are rated at 223ft/lb of tq which is plenty for my boost needs.

 

diff friction material

 

What is the difference in terms of me feeling it though?

 

well if one os organic and the other ceramic, the organic will feel stock. the ceramic will chatter on engagement. i am assuming they are the differences.

 

They are both organic.

 

Someone has to know..

 

The HDSS system will last longer under light-duty use and grip harder (but not last as long) under heavy-duty use because of the slightly different material composition.

If you want a specific answer, email ACT and I'm sure they'll tell you