[bjbstewart]

Originally Posted by antennahead

This is an interesting product from Focal. They don't specifically list the Z4, but based on the shape of the midrange and my previous experience replacing the mids in my car, I'm thinking this would fit:

http://www.crutchfield.com/p_091IFBM...l-IFBMW-S.html

I put a complete Focal system in another car with a JL amp. Holy cow, now that is some amazing sound!

Don't get those from Crutchfield. Go to a local installer/dealer that does Focal. They will be able to make sure you get the right part and it won't cost that much more for the install work...