Ok after speaking to several people I am going to for a solid flywheel conversion but which one do folk recommend? The TTV, CFM Spec Kit, or Clutchmaster kit also from CFM?

 

Are they ok to use on the ST170 mate, i work at a Bosch garage and we been told not to fit them to some cars as theses been engine/gearbox and management problems due to all the vibrations being pasted though them that the DMF will normally take up

 

as far as I'm aware they are ok to use. With the Aluminium Flywheel you do get some clutch chatter but if you want to avoid this there is a solid steel fly available that eliminates this. As long as you have the correctly sprung clutch pressure plate it absorbs the vibrations instaed of the DMF.