[DanoG80Cx]

I apologize if this has been answered before, but I tried searching and couldn't find an answer.

My 2012 335i E92 was rear ended last week and I have the option of replacing my M-Sport rear bumper & diffuser with the BMW Performance diffuser / 335is rear diffuser.

Now I've read that the performance diffuser requires trimming on M-Sport rear bumper, is this true even for LCI M-Sport? I can't imagine BMW having to trim the bumper to attach that diffuser on the 335is.

Is there maybe a BMW part# that has the bumper with the diffuser in a package or already attached? I found the part number for just the diffuser on the BMW website, but I didn't see a 335is full rear bumper with diffuser option.

I'd rather not have the body-shop start trimming my brand new rear bumper, if that's the case I'll probably just go with the standard M-Sport again.

Thanks for the replies.

[jwzimm]

Mine required zero trimming. Assuming you are getting an OEM bumper. Search google for the installation instructions and you can see what is involved.

[StevenY.]

If I recall correctly, only the e90 has to be trimmed. You should be good to go if you're going with an oem diffuser. The only time I heard of someone needing to trim on an e92 was for an aftermarket diffuser that was a bit off in fitment.

[1chanc3]

e92 should be a simple swap without any modification.

[jonluc88]

I dont know about e92. But indeed my e90 needed some trimming to fit the performance diffuser.

[Walker16]

I just put a carbon fiber performance diffuser on my e92 lci m-sport and no trimming was necessary

[DanoG80Cx]

thanks for the replies. i guess its just a direct replacement to the m-sport diffuser on the e92 then.