Hey new to this forum and have a Question about Koni shocks

Cichlid

Member
:
2018 WRX Sport Tech
Hey I am new to this forum, I am very soon going to pick up a 2014 mazda5 to replace my 2011 mazda3 as I need the space and seats. anyways I removed my koni str shocks from my 3 and I was wondering if i'm able to use these on the mazda5 they are fairly low mileage maybe 20,000km would be great if I could use them on the 5 when I get it.
 
part no. for rears is 8050 1108
part no. for fronts is 8750 1087L and 8750 1087R

I coulnd't find any info other than they just fit the 3.
 
They'll physically fit but the 5 is a lot heavier- so you really want shocks that are made for the MazdaSPEED 3, or the 5. Those are higher load shocks. Most shock manufacturers don't bother making separate versions for that chassis- they just throw one part number at the whole platform- but Koni does. Not sure it the STR line has two versions or not.

Went and looked them up...

2014 MZ5 Koni STR:
8750 1088L
8750 1088R
8050 1140

2014 MZ5 Koni Yellow:
8741 1490LSpor
8741 1490RSpor
8040 1354Sport

2012 MS3 STR:
8750 1088L
8750 1088R
8050 1109

2012 MS3 Yellow:
8741 1490LSpor
8741 1490RSpor
8040 1353Sport

2012 MS3 Red:
8745 1110L
8745 1110R
8045 1096

2012 MZ3 STR:
8750 1087L
8750 1087R
8050 1108

2012 MZ3 Yellow:
8741 1487LSpor
8741 1487RSpor
8040 1351Sport

2012 MZ3 Red:
8745 1110L
8745 1110R
8045 1096

So looks like Koni even split up different applications for damping between MZ3, MS3, and MZ5. They don't just lump the 5 together with the speed3 anymore.
 
They'll physically fit but the 5 is a lot heavier- so you really want shocks that are made for the MazdaSPEED 3, or the 5. Those are higher load shocks. Most shock manufacturers don't bother making separate versions for that chassis- they just throw one part number at the whole platform- but Koni does. Not sure it the STR line has two versions or not.

Went and looked them up...

2014 MZ5 Koni STR:
8750 1088L
8750 1088R
8050 1140

2014 MZ5 Koni Yellow:
8741 1490LSpor
8741 1490RSpor
8040 1354Sport

2012 MS3 STR:
8750 1088L
8750 1088R
8050 1109

2012 MS3 Yellow:
8741 1490LSpor
8741 1490RSpor
8040 1353Sport

2012 MS3 Red:
8745 1110L
8745 1110R
8045 1096

2012 MZ3 STR:
8750 1087L
8750 1087R
8050 1108

2012 MZ3 Yellow:
8741 1487LSpor
8741 1487RSpor
8040 1351Sport

2012 MZ3 Red:
8745 1110L
8745 1110R
8045 1096

So looks like Koni even split up different applications for damping between MZ3, MS3, and MZ5. They don't just lump the 5 together with the speed3 anymore.

thanks for the info I will just try to sell these I might pick up some coil overs for the 5.
 
You're welcome. If you want coilovers, my BC Racing coilovers are available...

Hey I have another question phunky.buddha I Just picked up my Mazda5 yesterday do you know if the front sway bar from the 3 fit I have racingbeat sway bars I know the rear fits but what about the front.?
 
Hey I have another question phunky.buddha I Just picked up my Mazda5 yesterday do you know if the front sway bar from the 3 fit I have racingbeat sway bars I know the rear fits but what about the front.?

I never tried the front but it should fit. If you put on a stiffer front bar without touching the rear though, it will actually understeer more than factory. Easy way to check is cross reference front sway bar part numbers on a dealer parts web site between the 3 and 5. If there are parts numbers common between the front bars or at least all the connecting hardware and arms, then they'll interchange. The suspension is pretty much just carried over from the 3 to the 5, so it shouldn't be a problem- I just can't tell you 100% for sure since I left the front bar alone.
 
Sorry for reviving an old thread, but I was looking as to why Koni changed the part number for the rear shock on 2nd gen MSP3. With regards to their STR.T product line, the first gen MSP3 and 2nd gen M5 share the same part number (8050 1140). For 2nd gen MSP3, the rear shock has a different part number, 8050 1109. I searched the forums here and googled for generation changes on MSP3, but could not find much in regards to rear suspension. So, I decided to email Koni directly and they responded the same day, in the matter of a few hours.

It turns out that the valving between the two shocks is identical. 8050 1140 is 10 mm longer in fully extended length and uses a wider lower attachment bushing of 50 mm, vs 35 mm on 8050 1109.
 
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