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Definitive info required re 2005 STI shocks

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Old 02 January 2020, 10:13 PM
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Feffers
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Default Definitive info required re 2005 STI shocks

Hi all,

After some advice please.

I have a 2005 Blob STI on 39k miles which has developed the rumble/knock noise at low speed due to sticking shocks. I’ve read on here that this is a common fault with their design and expected it sooner or later.

I did a bit of research and was told that the closest to stock STI would be to replace with the KYB SR Ultras.

The knock is just coming from the fronts but I assume that I’d need to replace all 4?

Are the Ultra SRs generally ok or could you recommend a better alternative (it’s not tracked so don’t need them any stiffer than OEM).

Happy New Year and many thanks in advance!
Old 02 January 2020, 10:35 PM
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https://www.ebay.co.uk/itm/KYB-Front...2/292279154047

https://www.ebay.co.uk/itm/KYB-Front...3/292271625117

https://www.ebay.co.uk/itm/KYB-Rear-...0AAOSwNydbYGDd

https://www.ebay.co.uk/itm/KYB-Rear-...AAAOSwAEhbYGPC

You'll not get any cheaper anywhere.
Old 03 January 2020, 09:48 AM
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Thanks Joe. Are these the ExcelG variant? It looks that way from the picture but the description lists various models.

I was advised that the UltraSR are the better direct replacement for the STI shocks but if the Excels are recommended I will look into them.

Old 03 January 2020, 09:59 AM
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Vxr2010
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is the issue not a tube within a tube , i thought some one posted about removing the original sti shocks and re greasing the tube , i think they put an extra bleed nipple in , then job done
Old 03 January 2020, 10:29 AM
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They are the ultra sr. Generic picture check the part numbers.
Old 03 January 2020, 11:10 AM
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You can just strip them and repack with marine grade grease and itll stop it knocking. Bleed nipple is an extra step on top of that should you want to te grease every so often
Old 03 January 2020, 11:37 AM
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There is a modification that can be done to prevent/mask knocking shocks which involves drilling and tapping a grease nipple into the bushing area of the shock. But once they are knocking they are worn so your only masking the original problem. Ideally new shocks and do the mod to prevent/prolong the wear/problem in the first place.

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Old 03 January 2020, 03:46 PM
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As far as I know you can't get kyb replacement front shocks for the 2005 (114.3 pcd) onwards sti Impreza, unfortunately only subaru branded ones (which are kyb ironically). The kyb rears will fit from the earlier 2001-2004 (100pcd) sti.

It's strange for the fronts to go as it's usually the rears due to the bearing/inverted design.

I changed mine a few years back and had to use rb320 fronts (they were cheap at the time) and kyb sr ultra on the rears.

Hope this helps,

Chris.
Old 03 January 2020, 06:30 PM
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I lifted the black boot on my rear ones and put half a can of lithium grease on them.
2mot's later and they don't knock or fail mot.
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Old 03 January 2020, 07:19 PM
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+1 for spraying lithium grease on shocks.
I had the knock on rear 05 wrx wagon.
A good spray sorted it.
I actually bought new shocks but never fitted them.
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Old 03 January 2020, 08:33 PM
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Originally Posted by stamina_daddy
+1 for spraying lithium grease on shocks.
I had the knock on rear 05 wrx wagon.
A good spray sorted it.
I actually bought new shocks but never fitted them.
Did the WRX wagon have inverted struts?
Old 03 January 2020, 08:44 PM
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Originally Posted by Chrisp11981
As far as I know you can't get kyb replacement front shocks for the 2005 (114.3 pcd) onwards sti Impreza, unfortunately only subaru branded ones (which are kyb ironically). The kyb rears will fit from the earlier 2001-2004 (100pcd) sti.

It's strange for the fronts to go as it's usually the rears due to the bearing/inverted design.

I changed mine a few years back and had to use rb320 fronts (they were cheap at the time) and kyb sr ultra on the rears.

Hope this helps,

Chris.
The hawk sti saloon had 114.3mm pcd. Some, late, Blob sti saloons had 114.3mm pcd. As you say, if 114.3mm pcd, then the Ultra SR front struts won't fit.
Old 04 January 2020, 06:13 AM
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Yes,wrx had inverted struts.
Old 04 January 2020, 02:00 PM
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Originally Posted by stamina_daddy
Yes,wrx had inverted struts.
2005-on.

Annoying that the saloon and wagon don't have the strut mounting holes in the same place.
Saloon struts on a wagon = less camber.
Wagon struts on a saloon = more camber

Last edited by 2pot; 04 January 2020 at 02:02 PM.
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