luckyu, could you just clarify something for us please?
You have rear bumpstop part Nr 33531138109 on your car which is from the last model of E85 Z4M ever produced right?
In an earlier thread, a different Z4 part Nr 33 53 6 770 350 was quoted, this is from a normal 3.0 Z4 according to Real OEM. Not the part we want?
[quote=luckyu;10855200]That's the rear bump stop & dust tube for E85 Z4. It's what I have on my car. It's 2.5" long.