Originally Posted by toicy4ya
Something seems off, I ordered the bump stops from FCPEuro.com and received this, the white one is the E46 Z4 (when I select E85 Z4 this is what I get) the orange one is the E36 M3.
You have to compare to the ones on your car now to these F/F and R/R. Comparing rear Z4 to front e36 m3 means nothing. You have the right ones for the front, if the rears are 1" shorter than your existing OEM rear stops that is good. I trimmed my OEM rear stops so did not use Z4.
They pop into the dust boots. There is a ridge for them.