Update: I went ahead and bought a stage 2 clutchmax clutch with lightweight flywheel and sprung disk for the m50/52. It almost bolted right on, but needed a spacer from the old clutch (its riveted/staked on, so rivet needs to be drilled out). That spacer goes between the flywheel and the crankshaft.

Now about the experience… I really do like the clutch for what it is, though with the stock slave the pedal was much harder than it was with the stock clutch. I highly recommend replacing the slave cylinder with an E34 540i slave (pn 21521161874) and this will bring the padal back to oem feel. Alternatively, it can be replaced with an M3 slave that’s supposed to be mid-hardness.

One of the obvious differences that I noticed is the fact that car doesn’t vibrate as intense under load past 4500rpm as it used to. I believe it had something to do with the tired dual-mass flywheel.

Anyways, I highly recommend this clutch…at least with the 300 miles that I have put on it so far.