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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > M-Tech Rear Bumper Install (E90 LCI)



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      01-27-2010, 02:11 PM   #1
SchwarzOpsAZ
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M-Tech Rear Bumper Install (E90 LCI)

First I used the video from this post to remove the OEM bumper. It's almost the same for an E90 LCI.

Only real difference was the top clips that are behind the tail lights. Instead of tabs it's just pinching the bumper cover so you can pull it right out once you have all the other tabs off.
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Now I'll pick up where the video stops.

Once you have the OEM bumper off. You will need to remove the bumper guides. There are three 8mm bolts on the top, and two 10mm bolts on the left & right.
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Attached to the bumper guide is a sensor that is clipped in two places. You can pull the sensor right off the bumper guide once it is detached from the car.
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(sorry for the bad focus)

Now install the new bumper guides, reversing what you just did. Make sure you transfer the metal clips used to screw the bumper cover and fender well lining on from the old bumper guide to the new one.

The main difference between the bumper guides is that the slotted area moves down for the M-Tech bumper to push into.
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Next snap on the new bumper cover. I found it easier to slip the cover under the pressure clips by the tail lights first so it was level, then snap the sides in. Now reverse what you did to take off your OEM bumper -->
screw in the bumper to the quarter panel
screw the lining back on
screw the cover to the bumper guide underneath
install the torx screws
replace your tail lights

The diffuser is fairly easy to figure out. I did have to steal two metal clips from spots that were no longer used to screw the diffuser to the bumper cover underneath in two spots.

Also My fender well lining didn't line up as it did before but with a little force I was able to stretch it over enough to screw it on.

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      02-27-2010, 10:43 PM   #2
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Hmm. My 10mm bolts on the guides aren't like that. Its just like some type of rivet or something. This is on a Pre-LCI.

EDIT: Its an 8mm socket nut. Doesn't look like a nut but it is.

Also, My mtec guides don't have a spot to mount the rear TPM sensors to... what did everyone else do?

Last edited by klipseracer; 02-27-2010 at 11:01 PM.
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      04-25-2010, 05:04 PM   #3
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how much does it cost?
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      08-04-2010, 09:27 PM   #4
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I just had my MTech bumper done, but lost the two clips that go into the far left and right sides of the bumper. Do you know what type these are?

Thanks in advance.
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      03-02-2011, 02:10 PM   #5
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From this DIY, it looks like you should "slide" the whole bumper off instead of pulling them away from the side clips: http://www.m3post.com/forums/showthread.php?t=361083
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      08-16-2011, 04:47 PM   #6
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I replaced my rear bumper & it's true that the bumper needs to slide backwards to avoid damaging the tabs on the sides.
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      08-18-2011, 02:04 PM   #7
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Quote:
Originally Posted by rbtamms View Post
I replaced my rear bumper & it's true that the bumper needs to slide backwards to avoid damaging the tabs on the sides.
+1 pull back with a bit of force and it slides out unscathed.
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      12-03-2011, 05:50 AM   #8
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I have a 08 e92 and just got the mtech rear bumper waiting for it to be painted. do i need to replace the bumper guides to fit the mtech rear or is it just mount right on?
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      03-21-2012, 01:00 PM   #9
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Anyone know the part number for the e90 mtech bumper guides??
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      07-25-2013, 09:44 AM   #10
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Pre-LCI

Can someone confirm the part number for the e90 mtech bumper guides. I ordered a kit for my pre-lci and it did not come with bumper guides. Thanks

Rear Bumper Guide - Left Mfg Part#51127906505

Rear Bumper Guide - Right Mfg Part#51127906506
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      09-02-2013, 12:20 AM   #11
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Ive heard you can install the M-tech rep's without guides? Is this true? I just bought mine from JGmods and apparently hes seen it done before. If so would you care to explain?

i have an e90 LCI btw
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      09-02-2013, 12:39 PM   #12
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Quote:
Originally Posted by xFlaTLinE View Post
Ive heard you can install the M-tech rep's without guides? Is this true? I just bought mine from JGmods and apparently hes seen it done before. If so would you care to explain?

i have an e90 LCI btw
Wanting to know this too -- if it can be done without buying the guides I will gladly go ahead!
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      02-21-2014, 10:43 PM   #13
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I am having trouble fitting the bumper as on the bottom the underbody covers don't lineup.

The non-mtech bumper has four screw holes to connect to under body shield. The mtec only has 2 and there is a gap. There's a picture of the part I'm talking about
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      09-05-2014, 10:16 PM   #14
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Just got my mtech bumper rear installed . Fitted . Diffuser painted gloss black to match my roof wrap

Went to kings auto body in palisades park, nj
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      10-28-2014, 09:21 PM   #15
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Nice DIY! Will be installing mine tomorrow evening!
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      10-28-2014, 09:22 PM   #16
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Is it as simple as just snapping the bumper into place and replacing the screws? Taking it off was a bitch!! LOL`
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