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Old 10-18-2020, 03:06 PM   #1
lord_galathon
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Member#: 505077
Join Date: Aug 2019
Chapter/Region: E. Canada
Location: Montreal
Vehicle:
2005 Saab 92x Aero
Silver

Default 29cm rear rotors on 05 Saabaru 92x Aero? Should be 26.6cm...

I have an 05 Saab 92x Aero with the H4 Turbo 2L engine - very nice and reliable. Bought it with a few upgrades, nothing crazy.

I know, it's not an actual Subaru but all the parts are interchangeable - almost.

I went to change the rear rotors and found that the OEM listings for my car show a 26.6cm rear rotor.

The rotors on my car are ~29cm which is definitely an upgrade the previous owner installed.

Also the pads don't fit my calipers. The OEM pads have a small knotch at the top of the bracket whereas my pads have a larger "square" notch and thereby the OEM pads, although similar in size, do not fit the caliper brackets at all.

So I have two options:

1) Go back to OEM which would require me changing the calipers for smaller OEM ones.

2) Get the correct fitment "upgrades" which mean the correct brake pads and rotors for this caliper setup.

Q: Which Subaru (definitely a Subaru upgrade) rear rotors are ~29cm - I say approximatively because I didn't measure them out with a caliper, I used a regular tape measure so it could be 28.8cm or 29.2cm.

Definitely bigger than the 26.6cm OEM.

Thanks in advance.
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Old 10-18-2020, 06:44 PM   #2
snow_bound26
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Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Vehicle:
2005 92x Aero
Blue(retired�ȸ

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Take a pic of your calipers. There are few popular upgrades people do to get larger rotors on the rear. Nothing wrong with having a different setup in the rear as long as you know what parts you need to purchase when doing work on your car.
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Old 10-18-2020, 08:36 PM   #3
lord_galathon
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Chapter/Region: E. Canada
Location: Montreal
Vehicle:
2005 Saab 92x Aero
Silver

Default

I got a hold of the previous owner and he confirmed the rear brakes were upgraded to a 05 Legacy GT kit, which has 28.9cm rotors.

I've ordered the parts, I expect everything to fit. According to the photos of the pads the notches should line up.

Thanks for your help.
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Old 10-23-2020, 02:49 PM   #4
lord_galathon
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2005 Saab 92x Aero
Silver

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So the pads fit perfectly but...

Turns out the calipers don't fit the "regular" Legacy GT rotors.

All the 29cm Legacy GT rotors I found are ventilated so obviously they are thicker than the solid rotors.

Naturally these don't fit the calipers as they are too thick.

And now?
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Old 10-23-2020, 06:53 PM   #5
snow_bound26
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Contact Ken at KNS Brakes. He will help you get the right rotors. I may be wrong but IIRC the H6 rear brake conversion is the same size as the LGT brakes but is a solid rotor instead of vented.
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Old 10-24-2020, 02:00 AM   #6
jamal
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Yeah there are two 290mm rotors, the solid ones, and vented (well, more than 2 but those are the relevant ones here).

The solid ones were found on the 00-04 legacy. They're known as "H6" rotors but were on all versions of the legacy/outback for that year range. Vented is on 06-07 wrx and the 05-09 legacy gt. There's a thread about all this around somewhere...

Centric part number is 120.47017 for the 290x10mm solid rotors with a 5x100 bolt pattern, 170mm parking brake, and the "old" rotor hat offset.
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Old 10-29-2020, 12:27 PM   #7
lord_galathon
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Join Date: Aug 2019
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2005 Saab 92x Aero
Silver

Default

Quote:
Originally Posted by jamal View Post
Yeah there are two 290mm rotors, the solid ones, and vented (well, more than 2 but those are the relevant ones here).

The solid ones were found on the 00-04 legacy. They're known as "H6" rotors but were on all versions of the legacy/outback for that year range. Vented is on 06-07 wrx and the 05-09 legacy gt. There's a thread about all this around somewhere...

Centric part number is 120.47017 for the 290x10mm solid rotors with a 5x100 bolt pattern, 170mm parking brake, and the "old" rotor hat offset.
Ah there it is. Thanks. I was looking at the same year as the Saab but didn't realize he could've put brakes from a different year. I suppose as long as the hub, studs and handbrake fit...

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