Mirage suspension history (factory revisions/changes)

The Mirage's suspension has been an issue of debate since day one.

Not surprisingly, Mitsubishi has updated the suspension setup several times to improve upon things. This thread will attempt to document the changes.

2014
- Front and rear springs changed 7/2/14. New springs are assumed to be stiffer.

2015
- New front crossmember support.
- New rear axle beam.

No 2016 model year, see 2017

2017
- New front strut.
- New rear spring and shock.

2018
- ?

PART NUMBERS

Part	2014 - to 7/1/14	2014 - from 7/2/14	2015	2017	2018
Front Spring (manual)	4040A259	4040A411	<----	4040A411 & 4040A413
Front Spring (CVT)	4040A256	4040A412	<----	4040A412 & 4040A414
Front Strut	4060A382	<----	<----	4060A494 & 4060A589
Front Support Cross-Member	4000A230	<----	4000A388	<----
Front Stabilizer Bar	4056A139	<----	<----	<----
Rear Spring	4140A319	4140A466	<----	4140A469
Rear Shock	4162A219	<----	<----	4162A396
Rear Axle Beam	4120A139	<----	4120A150	<----

Front Suspension
1) Strut
2) Strut bolt
3) Strut nut
4) Spring
5) Dust cover
6) Lower seat
7) Upper seat
8) Seat
9) Bearing
10) Strut mount
11) Insulator
12) Mount plate
13) Mount plate nut
14) Stopper
15) Stopper washer
16) Top nut
17) Top cap

Attachment 5140



Front Suspension
1) Stabilizer bar
2) Stabilizer bar bushing
3) Stabilizer bar bracket
4) Stabilizer bar bolt
5) Stabilizer link

Attachment 5141



Front Suspension
1) Support crossmember
2) Support crossmember mount bolt
3) Support crossmember screw
4) Knuckle
5) Lower control arm
6) Lower control arm lock nut
7) Lower control arm bolt
8) Lower control arm nut

Attachment 5136



Rear Suspension
1) Axle beam
2) Axle beam bolt
3) Shock
4) Shock bolt
5) Spring
6) Upper isolator
7) Lower isolator
8) Dust cover
9) Cup
10) Shock mount upper
11) Shock mount lower
12) Plate
13) Washer
14) Top nut

Attachment 5137

October 8, 2017: Added/updated 2017 model year part numbers. (Eggman)

I hope to build this post with more info. Obviously the 2017 model will have changes.

The one thing I did find interesting is there are different springs for automatic vs manual trans. I'm hoping we can get some more info on this. Perhaps someone could measure their springs so we can see what the difference is?

Quote:

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Originally Posted by Daox

The one thing I did find interesting is there are different springs for automatic vs manual trans. I'm hoping we can get some more info on this. Perhaps someone could measure their springs so we can see what the difference is?

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I suspect it is the spring rate due to added CVT weight.

Possibly CVT springs are same rate just longer for same sag.

So, that could explain why the other mirages are stiffer than mine...

I could have sworn I have seen on here a summary of 2015 changes which noted revised springs and dampers. Was the change made in 2014 and simply marketed as 2015 change?

Quote:

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Originally Posted by ahausheer

I could have sworn I have seen on here a summary of 2015 changes which noted revised springs and dampers. Was the change made in 2014 and simply marketed as 2015 change?

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The change probably coincided pretty closely to the beginning of 2015 model year production. Manufacturers usually switch from one model year to the next starting in July or August.

My '15 was built in September of '14. Anybody have a '14 model with a 7/14 production date? Or, for that matter, a '15 with a 7/14 production date?

Wow - I missed this thread. Good idea, Tim.

Quote:

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Originally Posted by Cobrajet

The change probably coincided pretty closely to the beginning of 2015 model year production. Manufacturers usually switch from one model year to the next starting in July or August.

My '15 was built in September of '14. Anybody have a '14 model with a 7/14 production date? Or, for that matter, a '15 with a 7/14 production date?

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My 2015 is 7-14.

regards
mech

I just looked up numbers for the rear axle beam and the part number was changed for the 2015 model year. I've updated the first post to include these numbers and changes.

2014 - 4120A139
2015 - 4120A150

It would be pretty awesome if we could get some owners to share detailed pictures of their rear beams to see what the difference might be.

I wonder what it'll be for 2017?

I don't see any difference in mine which is a 2015 made in July 14, probably more stability when welding the trailing arms to the beam itself. Mine is out slightly in camber but in specs for toe.

regards
mech

Interestingly the front support crossmember (subframe) is different as well.

2014 - 4000A230
2015 - 4000A388

The control arms have the same part number from 2014 to 2015 though.

I also went ahead and added front and rear suspension diagrams with part descriptions to the first post. Copied below:

Front Suspension
1) Support crossmember
2) Support crossmember mount bolt
3) Support crossmember screw
4) Knuckle
5) Lower control arm
6) Lower control arm lock nut
7) Lower control arm bolt

Attachment 5136



Rear Suspension
1) Axle beam
2) Axle beam bolt
3) Shock
4) Shock bolt
5) Spring
6) Upper isolator
7) Lower isolator
8) Dust cover
9) Cup
10) Shock mount upper
11) Shock mount lower
12) Plate
13) Washer
14) Top nut

Attachment 5137

Added part numbers for:

front stabilizer bar (sway bar) - no changes through 2015
front crossmember - changed in 2015

I'll add the diagrams for the rest of the suspension parts later.

I've updated the first post with more diagrams of the front suspension including springs, struts, and the sway bar (stabilizer bar).

Updated with some 2017 part numbers provided by Dontee. Thanks!

You asked, I've delivered (Part #'s of 2017 vs. 2015 Mirage Suspension)

I will work on getting those Part #s that are missing.

Woohoo, thanks!

Added the rest of the 2017 suspension part numbers to the list. Thanks Dontee!

http://mirageforum.com/forum/showthr...ge-Suspension)


I also reformatted the chart (added arrows vs all part numbers) to make it easier to see when changes were made.

Quote:

---

Originally Posted by Daox

Added the rest of the 2017 suspension part numbers to the list. Thanks Dontee!

http://mirageforum.com/forum/showthr...ge-Suspension)


I also reformatted the chart (added arrows vs all part numbers) to make it easier to see when changes were made.

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So the rear springs stayed the same? I thought they were different

Bleh, thats my mistake. It'll be fixed in a minute. Nice catch, thanks.

Looking at the part numbers: are left and right front strut the same number? They should be different at least they are on most cars.

Mitsubishi parts warehouse lists the same part number for both sides. I wondered the same thing. :)

Quote:

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Originally Posted by Eggman

Mitsubishi parts warehouse lists the same part number for both sides. I wondered the same thing. :)

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I've looked at the ones we pulled out, and they appear to be identical. For the most part L/R struts on other cars only differ by brake line mounting bracket, and on Mirage it has an attachable piece, so the shocks appear to be identical. Surprise surprise.. more so as I was the one to pull them out in the first place.

Updated 2017 model year part numbers to the chart and added links.

The links give more detail on the item including pricing, both list price and any discounted price.

Searching for links I could not find three items. I suppose those parts are no longer available and/or superseded. The compatibility of some others were listed for multiple years, and I tried to note this as best I could while maintaining the original chart layout.

Let us know if there are any additions, errors, or dead links.

Found a difference between early 14 and 15 trailing axles. Not a big change but the rear abs wiring on the early cars goes up and into the car back in the wheel well. The later cars have the wires run forward under the car and go inside the car ahead of the trailing axle mount.
October 2013 model Attachment 16400

And a 2015
Attachment 16401

Damnit, pictures turned sideways on me. Again

Fantastic thread! I can get a handle on handling!

I just noticed one more difference between 2017 and 2015. The 2017's have a thin round metal plate where the top of the strut bolts to the tower. The 2015's have nothing, the strut just bolts to the strut tower with 2 nuts and not spacer. I don't have time to post pics right meow.

Here is a 2015 Attachment 19369

the 2017 has a plate kinda like Attachment 19370