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Old 01-07-2019, 09:34 PM   #176
02WRX444
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OMGHi2U

Sorry to dig this up and first time poster! Will 2004 Outback H6 rear calipers work on a 2002 Wrx? I ordered a power stop H6 package that include calipers, brackets, disks and pads for the H6 upgrade.

Quote:
Originally Posted by ezil71 View Post
I have an 03 WRX with the H6 upgrade. I need to replace my calipers and wanted to buy a full/semi loaded caliper and bracket.

Can I just order the full/semi loaded caliper for an 03 Outback H6? I know the brackets aren't an issue, but is there a difference in the caliper at all?

My current rear calipers are the 'newer' 03 (04+ originally with the 1004 pads, now back to the 770 with the H6 bracket)

Thanks

Edit: also, since I already have the H6 rotors, would the 06\07 rear 2 pots work (with an adapter of course). Or is that a different size rotor than the 06\07?
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Old 01-09-2019, 06:31 PM   #177
jamal
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Yes, all will bolt on directly, you will just need to trim the dust shield.
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Old 11-14-2019, 07:56 PM   #178
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Super informative. Hope someone will do a 2015+ guide.
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Old 11-15-2019, 03:34 AM   #179
trinydex
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there's going to be S209 Brembo 6 pistons for front. is the rear still 2 piston?
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Old 02-07-2020, 11:06 PM   #180
DuneSuby
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Default '05- WRX LGT Backer..

PSA (& correct me if there is a better option);

I could not find an OE backing plate part # which combines the dust shield size for the LGT rear rotor with a backing plate compatible with an '05- WRX (found this out the hard way when the new LGT backers arrived, yay!)..

Seeing as I am doing wheel bearings anyway and I am now stubbornly committed to having "proper" backers with dust shields that fit my recently new LGT rear brake upgrade, I am now in the process of drilling spot welds and transferring dust shields between new sets of each..

Yes; I love the LGT upgrade, feel like it is perfect for this car ('05 Saabaru, BTW).. No, I did not want to take the next step to the 2/4 pots and just get '06-07 WRX backers (26704FE080/090), lol..

So, if there is anyone else curious/crazy that wants to go down this road these are the part #'s I have settled on;
'05 WRX Backers: 26255AA061/071
'05 LGT Backers: 26704AE040/050

If anyone happens to want custom backing plates to run smaller WRX brakes on their LGT I have the spare bits to build the perfect set for you..!
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Old 04-18-2020, 12:09 PM   #181
InsatiableAmos
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Love all this info in one place!

So, just to confirm I understand, ‘08+ STI Brembo rear calipers will not fit on ‘04 STI knuckles, right?

It sounds like the fronts will bolt up just fine - is that true all they way through mode year ‘19 or ‘20?
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Old 07-22-2020, 07:25 PM   #182
02WRX444
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Thanks again for the confirm and exactly as you stated. Have had H6 upgrade on for a while and no problems.
Quote:
Originally Posted by jamal View Post
Yes, all will bolt on directly, you will just need to trim the dust shield.
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Old 09-06-2020, 11:41 PM   #183
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Quote:
Originally Posted by 97GF4 View Post
The 08-14 wrx brakes are interchangeable with the N/A Impreza of those years correct? Front and rear?
Yes, I'm answering something from 2017....in the spirit of the ongoing "interchangeable brake" thread.

I have a 2009 2.5i that I accidentally bought 2009 wrx front rotors for. I noticed the brake pads were the same part number, so on a hunch I picked up front left and front right wrx caliper mounting brackets from Autozone, bolted them to the spindle, and then bolted the 2.5i caliper (top half) and they bolted up just fine and allowed me to use the larger rotors.

Cliff notes: You can turn your front 2.5i brakes into wrx brakes by swapping wrx caliper mounts and rotors in.....pads are the same.
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Old 11-02-2020, 05:19 AM   #184
doru
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This thread is saying that 08- STI rear calipers will not fit on a WRX.
But here is a thread where that is actually done by using 09 Sti calipers on 09 WRX.

My question: is that caliper possible to be installed the same way on the previous generation WRX the one contemporary with the Sti gold calipers?

I noticed he has used 04 sti rotors and he did not have an issue with the parking brake diameter. So for an earlier WRX I could use the DBA 2657 rotor. Would that work?
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Old 11-02-2020, 07:38 AM   #185
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Quote:
Originally Posted by doru View Post
This thread is saying that 08- STI rear calipers will not fit on a WRX.

But here is a thread where that is actually done by using 09 Sti calipers on 09 WRX.



My question: is that caliper possible to be installed the same way on the previous generation WRX the one contemporary with the Sti gold calipers?



I noticed he has used 04 sti rotors and he did not have an issue with the parking brake diameter. So for an earlier WRX I could use the DBA 2657 rotor. Would that work?


08+ rear Brembo works on 08+ WRX. They will not work on any previous gen because the offset of the caliper is different on the rears. Fronts are interchangeable. Rears are not due to differences in offset.
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Old 11-02-2020, 11:27 AM   #186
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Will 2018+ STi brakes fit on a base Impreza (non wrx)?
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Old 04-14-2021, 04:50 PM   #187
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FYI. 2016 STI Brembos will fit behind 2017 WRX "Premium" 18" OE wheel with plenty of room to spare. There have been talks all over this forum about needing spacers. I could be missing something, but from what I could see today (test fit them), they're not even close to needing spacers. You could drive a semi-truck through the space between the caliper/wheel barrel and I'd say the space between the caliper and the spokes is almost a 3rd of a penny (ask Abe Lincoln).

[EDIT] All this time I didn't realize that these wheels were the same ones on the old '12-14 non-BBS STI's, so theoretically there shouldn't be an issue fitting Brembo's behind these if the specs haven't changed.










Last edited by PilotKD; 04-17-2021 at 09:19 AM.
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Old 04-17-2021, 08:19 AM   #188
eska90
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thanks!
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Old 05-19-2021, 03:22 PM   #189
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Finally got these brakes in. Had some issues with a leak on the driver's side (front), but after replacing the inner O-ring, we're all good. Pretty happy with the results. All in all, I spent about $2.2k on a full Brembo setup, which included the calipers, a (10) bag of O-rings, powercoating/rebuild, replacing a few caliper pins/clips, Hawk HPS 5.0 pads, Goodridge SS lines, StopTech Cryo slotted rotors and almost 5 bottles of Motul 600 by the time I was done with the flush.




Last edited by PilotKD; 05-19-2021 at 03:37 PM.
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Old 08-17-2021, 06:23 PM   #190
CanteenPapi
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Quote:
Originally Posted by jamal View Post
Is interchangeability a word? I guess so since there's no squiggly red line under it. Anyhoo, while I touched on this stuff in the compiled brake information thread, I thought maybe it couldn't hurt to have it all laid out a little more clearly.

Basically, most Subaru brakes will interchange onto other Subarus. That's very convenient when you want to put bigger brakes on your non-STi Subaru without spending a lot of money. To be extra clear, almost any front caliper will bolt onto any other Subaru. The rear brakes are where things get complicated.

When talking about physically bolting the brakes up to another Subaru, there are a few things to be concerned about:

1. Wheel Clearance
2. Rotor bolt pattern
3. Caliper mounting
4. Rear parking brake diameter

#1 is pretty simple. If you're putting brembos on your 93 Impreza L, obviously the the tiny stock steelies aren't going to fit.

#2 is something you have to be concerned with when installing brembos. The 05+ STi has a 5x114.3 bolt pattern. So while you can bolt the calipers right up other cars, you'll need to use rotors drilled in 5x100, such as those on the 04 sti. The Tribeca and SVX also have a 5x114.3 bolt pattern, while all the other Subarus since 1990 or so are 5x100 (well, except the Justy).

#3 comes into play when installing STi brembos or the Subaru 2-pots in the REAR. Any FRONT caliper/bracket will bolt up to the front of any other modern Subaru (except the SVX), but in the rear there are different backing plates. The backing plate is attached to the rear spindles, and is what the calipers bolt to. There are a few different backing plates, and brakes will not interchange between them. The solution is to either switch backing plates or use an adapter bracket.

The way to divide up the backing plates is as follows:
-Drums
-Sliding 1-pot calipers
-Fixed 2-pot calipers
-new cars - 08+ impreza, 09+ forester, '10+ legacy, which do not have a backing plate.

drums

Obviously you can't bolt discs up to a drum backing plate since there's nowhere for the caliper to attach. To swap from drums you'll need to remove the brakes, press out the hub, remove the backing plates, and install disc backing plates, parking brakes (also the cables), the hubs (and likely new bearings), and then rotors and calipers. Generally it's easier to find some disc spindles and swap the whole things over.

1-pots

For the sliding calipers, almost everything used to be interchangeable. For example, a really popular and worthwhile upgrade for an older WRX is to take the caliper brackets and rotors from an 00-04 Legacy which gets you a 290mm rotor vs 266. This is called the "H6" upgrade. If you have a really old Legacy or Impreza it's also not a bad idea to upgrade to newer parts which gives you a better pad selection.

For the 08+ Impreza, the rear suspension changed significantly, and so did the rear upright and brakes. While the not-STi still uses a sliding 1-pot caliper, the spacing from where it mounts to where the rotor is changed. This means you can't really retrofit older brakes onto them. This isn't that terrible because the 08+ rotor is a fairly good size at 286mm, so you basically already have the "H6" upgrade. There is also now a bracket to use the older 2-pots or brembos with the 08+ hubs.

2-pots

To bolt a 2-pot rear caliper to a 1-pot car, you'll need to install either the 2-pot backing plates which is the same process I mentioned for drums, or you can purchase some adapter brackets. KNSbrakes and Kartboy make conversion brackets to attach either the Subaru 2-pots or 04-07 Brembos to the rear of most any other Subaru (even the 08+). I should note that some of the older WRX 2-pot rear adapters do not work with Brembo 2-pot rear calipers even though the mounting is the same between them.

If you want to swap rear brembos for the 2-pots, or vice-versa, no bracket is required. Sti brembos will bolt right up to an 06-07 WRX, and the rear 2-pots will bolt right up to an 04-07 STi.

If, for some reason, you wanted some sliding calipers on your 2-pot car, you're out of luck. No bracket exists so you'll have to pull off the spindles and swap backing plates.

When it comes to STi Brembos, there's another little issue that arises when switching brakes and that is the rear parking brake. The STi, along with a few non-US models (and the 08+), has a larger 190mm parking brake drum (compared to 170mm on everything else). That means if you were to pick up some rear STi brembo calipers and rotors and put them on your non-sti, the parking brake wouldn't work because there's a 10mm gap between the drum and the shoes. It also means if, for rally purposes perhaps, you wanted some Subaru 2-pots on your STi, the rotors wouldn't fit over the parking brake.

Thankfully there's a solution for each situation. Subaru took care of the Brembo -> 2-pot swap because the 2-pots are (were) the group N rally-spec brakes. So they make rotors that work with the 2-pots but fit over STi parking brakes, in both 5x100 and 5x114.3. You can get them from rally shops such as Rallispec or Rocket Rally. I believe KNS brakes also offers a version of this rotor now which is less expensive than the group n parts.

To make rear brembos work on a 170mm parking brake car, there are a couple of solutions. The best one is the DBA 2657 rotor. It's a brembo-sized rotor, drilled for 5x100, with a 170mm parking brake hat. This is a new thing that was produced specifically to go with the WRXBrakes Brembo adapter brackets, so be sure to thank Tom and DBASteve and Ken at WRXbrakes for getting together on that.

Before then, the solution was to either swap to a bigger parking brake, get some spacers made to fit in the rotor hat, or buy some taller parking brake shoes. Godspeed in the UK makes taller shoes, and adapter brackets. Brembo also makes adapter brackets and rotors, that just use an insert in a standard sti rotor. I think you can only get the brackets with the brembo rear kit for the wrx. And that is a way more expensive option that swapping on some used stock brakes with a bracket.

Can I put front brakes on the rear?

No, as in not a chance. Don't try. Don't post a thread asking about it.

What happens to my brake bias?

If you have a 93 impreza and put on some front brembos, you might think that there would be a big increase in braking force. You would be right, and it would only be on the front wheels. That results in the front doing all the work, the rear doing nothing, and can actually increase your stopping distance. If you are swapping brakes around, take a look at this spreadsheet:

http://www.main.experiencetherave.co.../brakemath.xls
courtesy of Legacy777

Ideally you want to keep the bias where it was or go rearward a small amount (why the H6 upgrade is so popular).

a little more about new cars

For 2008, the Impreza has a whole different thing going on in the rear. While the front brakes are still the same, the rear suspension, spindles, and caliper mounting changed on regular Imprezas, the WRX, and the STi. Instead of a backing plate, the calipers mount to the spindle just like the front. Because of this, the calipers are different. The bolt spacing is actually the same as older 1-pot calipers, on both the WRX and STi.

Another thing to note is that the 08 WRX has the same larger 190mm parking brake hat as the STi.

So yes, it is possible to put 08 sti rear calipers on an 08+ wrx and it happens to be very easy. All you need is any set of front brembos, 08+ sti rear brembo calipers, and rotors drilled for 5x100. You can use 04 sti front rotors, but 04 sti rear rotors won't work and they have to be for an 08+ STi. Pretty much any machine shop will be able to re-drill the rotors for a nominal charge. What's even more convenient is that DBA dual drills their STi rotors in 5x100 and 5x114 and WRXbrakes does it in house to less expensive centric blank rotors.

This will only work with 08+ sti rear calipers and re-drilled 08+ STi rear rotors because the mounting on the calipers changed as did the rotor hat offset. If you were to attempt to use an 04 sti rotor, it would not line up with the caliper. The DBA rotor part numbers are 4654 front and 42656 rear. Anything dual drilled will have the part number end with -10. For example, DBA42656XS-10 is the dual drilled rear rotor that would be good to use for this swap.

The 09+ Forester, 2010+ Legacy, and BRZ/FT86/FRS also has the same rear upright and brake setup, so all this should apply to them as well.

If you wanted to put 08 sti rear calipers on an older 1-pot cars, they would bolt to the backing plate, but there is no rotor that will currently work. The DBA rotor would not line up with the caliper. The actual difference in offset is something I don't currently know, and I'm not sure if even an 08 sti rotor re-drilled would line up properly (parking brake issues aside). It could end up interfering with the backing plate. This is something I always meant to try but never got around to. It would make some upgrades and swaps easier.


Exceptions to the rules

-If you want to put smaller brakes on an 05+ STi, you can't just take a regular wrx front rotor, re-drill it, and bolt it on. The rotor hat will not fit over the hub. Subaru make special rotors to do this. On that note, out of other Subaru brakes, ONLY the 4-pots will fit with STi hubs. The caliper bracket for a 2-pot won't clear the hat on the special rotor.
-If you have an SVX, the front brakes are different and don't interchange. Rears are H-6 sized, but get that added rotor size at the upright and not from the bracket. You should be able to bolt on newer 1-pot rear brackets and calipers if you were looking for replacement parts but there isn't really an upgrade that works.


NEW: stuff about the BRZ

The BRZ uses the same rear suspension as the current Impreza/Legacy. The front brakes are standard 2-pot WRX, and the rears are from the 2010 LGT. So, putting Brembos on (something Greddy has already done), is the same as for the 08+ WRX- you take the STI caliper, redrill the rotor, and it bolts right up.

EDIT: because of the differential bore sizes and location of the fluid crossover in the caliper, you CAN NOT put sti brembos on the front of the BRZ/FRS. Subaru 4-pots will work fine swapped left to right.


Brembo brakes were installed from a 2019+ STI on my 2016 WRX. My brake pedal is very mushy tho, i have to really step on it to engage the brakes. My mechanic bled the lines twice and we still have this issue. Does anyone know if i need to upgrade to the 2019+ master cylinder and brake booster because it is the new 6pot brakes and requires more fluid or does the bleeding need to be done professionally of the ABS and such. Thanks in advance for any help!
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Old 08-17-2021, 06:24 PM   #191
CanteenPapi
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Unhappy 2016 wrx brembo upgrade from 19 sti

Quote:
Originally Posted by jamal View Post
Is interchangeability a word? I guess so since there's no squiggly red line under it. Anyhoo, while I touched on this stuff in the compiled brake information thread, I thought maybe it couldn't hurt to have it all laid out a little more clearly.

Basically, most Subaru brakes will interchange onto other Subarus. That's very convenient when you want to put bigger brakes on your non-STi Subaru without spending a lot of money. To be extra clear, almost any front caliper will bolt onto any other Subaru. The rear brakes are where things get complicated.

When talking about physically bolting the brakes up to another Subaru, there are a few things to be concerned about:

1. Wheel Clearance
2. Rotor bolt pattern
3. Caliper mounting
4. Rear parking brake diameter

#1 is pretty simple. If you're putting brembos on your 93 Impreza L, obviously the the tiny stock steelies aren't going to fit.

#2 is something you have to be concerned with when installing brembos. The 05+ STi has a 5x114.3 bolt pattern. So while you can bolt the calipers right up other cars, you'll need to use rotors drilled in 5x100, such as those on the 04 sti. The Tribeca and SVX also have a 5x114.3 bolt pattern, while all the other Subarus since 1990 or so are 5x100 (well, except the Justy).

#3 comes into play when installing STi brembos or the Subaru 2-pots in the REAR. Any FRONT caliper/bracket will bolt up to the front of any other modern Subaru (except the SVX), but in the rear there are different backing plates. The backing plate is attached to the rear spindles, and is what the calipers bolt to. There are a few different backing plates, and brakes will not interchange between them. The solution is to either switch backing plates or use an adapter bracket.

The way to divide up the backing plates is as follows:
-Drums
-Sliding 1-pot calipers
-Fixed 2-pot calipers
-new cars - 08+ impreza, 09+ forester, '10+ legacy, which do not have a backing plate.

drums

Obviously you can't bolt discs up to a drum backing plate since there's nowhere for the caliper to attach. To swap from drums you'll need to remove the brakes, press out the hub, remove the backing plates, and install disc backing plates, parking brakes (also the cables), the hubs (and likely new bearings), and then rotors and calipers. Generally it's easier to find some disc spindles and swap the whole things over.

1-pots

For the sliding calipers, almost everything used to be interchangeable. For example, a really popular and worthwhile upgrade for an older WRX is to take the caliper brackets and rotors from an 00-04 Legacy which gets you a 290mm rotor vs 266. This is called the "H6" upgrade. If you have a really old Legacy or Impreza it's also not a bad idea to upgrade to newer parts which gives you a better pad selection.

For the 08+ Impreza, the rear suspension changed significantly, and so did the rear upright and brakes. While the not-STi still uses a sliding 1-pot caliper, the spacing from where it mounts to where the rotor is changed. This means you can't really retrofit older brakes onto them. This isn't that terrible because the 08+ rotor is a fairly good size at 286mm, so you basically already have the "H6" upgrade. There is also now a bracket to use the older 2-pots or brembos with the 08+ hubs.

2-pots

To bolt a 2-pot rear caliper to a 1-pot car, you'll need to install either the 2-pot backing plates which is the same process I mentioned for drums, or you can purchase some adapter brackets. KNSbrakes and Kartboy make conversion brackets to attach either the Subaru 2-pots or 04-07 Brembos to the rear of most any other Subaru (even the 08+). I should note that some of the older WRX 2-pot rear adapters do not work with Brembo 2-pot rear calipers even though the mounting is the same between them.

If you want to swap rear brembos for the 2-pots, or vice-versa, no bracket is required. Sti brembos will bolt right up to an 06-07 WRX, and the rear 2-pots will bolt right up to an 04-07 STi.

If, for some reason, you wanted some sliding calipers on your 2-pot car, you're out of luck. No bracket exists so you'll have to pull off the spindles and swap backing plates.

When it comes to STi Brembos, there's another little issue that arises when switching brakes and that is the rear parking brake. The STi, along with a few non-US models (and the 08+), has a larger 190mm parking brake drum (compared to 170mm on everything else). That means if you were to pick up some rear STi brembo calipers and rotors and put them on your non-sti, the parking brake wouldn't work because there's a 10mm gap between the drum and the shoes. It also means if, for rally purposes perhaps, you wanted some Subaru 2-pots on your STi, the rotors wouldn't fit over the parking brake.

Thankfully there's a solution for each situation. Subaru took care of the Brembo -> 2-pot swap because the 2-pots are (were) the group N rally-spec brakes. So they make rotors that work with the 2-pots but fit over STi parking brakes, in both 5x100 and 5x114.3. You can get them from rally shops such as Rallispec or Rocket Rally. I believe KNS brakes also offers a version of this rotor now which is less expensive than the group n parts.

To make rear brembos work on a 170mm parking brake car, there are a couple of solutions. The best one is the DBA 2657 rotor. It's a brembo-sized rotor, drilled for 5x100, with a 170mm parking brake hat. This is a new thing that was produced specifically to go with the WRXBrakes Brembo adapter brackets, so be sure to thank Tom and DBASteve and Ken at WRXbrakes for getting together on that.

Before then, the solution was to either swap to a bigger parking brake, get some spacers made to fit in the rotor hat, or buy some taller parking brake shoes. Godspeed in the UK makes taller shoes, and adapter brackets. Brembo also makes adapter brackets and rotors, that just use an insert in a standard sti rotor. I think you can only get the brackets with the brembo rear kit for the wrx. And that is a way more expensive option that swapping on some used stock brakes with a bracket.

Can I put front brakes on the rear?

No, as in not a chance. Don't try. Don't post a thread asking about it.

What happens to my brake bias?

If you have a 93 impreza and put on some front brembos, you might think that there would be a big increase in braking force. You would be right, and it would only be on the front wheels. That results in the front doing all the work, the rear doing nothing, and can actually increase your stopping distance. If you are swapping brakes around, take a look at this spreadsheet:

http://www.main.experiencetherave.co.../brakemath.xls
courtesy of Legacy777

Ideally you want to keep the bias where it was or go rearward a small amount (why the H6 upgrade is so popular).

a little more about new cars

For 2008, the Impreza has a whole different thing going on in the rear. While the front brakes are still the same, the rear suspension, spindles, and caliper mounting changed on regular Imprezas, the WRX, and the STi. Instead of a backing plate, the calipers mount to the spindle just like the front. Because of this, the calipers are different. The bolt spacing is actually the same as older 1-pot calipers, on both the WRX and STi.

Another thing to note is that the 08 WRX has the same larger 190mm parking brake hat as the STi.

So yes, it is possible to put 08 sti rear calipers on an 08+ wrx and it happens to be very easy. All you need is any set of front brembos, 08+ sti rear brembo calipers, and rotors drilled for 5x100. You can use 04 sti front rotors, but 04 sti rear rotors won't work and they have to be for an 08+ STi. Pretty much any machine shop will be able to re-drill the rotors for a nominal charge. What's even more convenient is that DBA dual drills their STi rotors in 5x100 and 5x114 and WRXbrakes does it in house to less expensive centric blank rotors.

This will only work with 08+ sti rear calipers and re-drilled 08+ STi rear rotors because the mounting on the calipers changed as did the rotor hat offset. If you were to attempt to use an 04 sti rotor, it would not line up with the caliper. The DBA rotor part numbers are 4654 front and 42656 rear. Anything dual drilled will have the part number end with -10. For example, DBA42656XS-10 is the dual drilled rear rotor that would be good to use for this swap.

The 09+ Forester, 2010+ Legacy, and BRZ/FT86/FRS also has the same rear upright and brake setup, so all this should apply to them as well.

If you wanted to put 08 sti rear calipers on an older 1-pot cars, they would bolt to the backing plate, but there is no rotor that will currently work. The DBA rotor would not line up with the caliper. The actual difference in offset is something I don't currently know, and I'm not sure if even an 08 sti rotor re-drilled would line up properly (parking brake issues aside). It could end up interfering with the backing plate. This is something I always meant to try but never got around to. It would make some upgrades and swaps easier.


Exceptions to the rules

-If you want to put smaller brakes on an 05+ STi, you can't just take a regular wrx front rotor, re-drill it, and bolt it on. The rotor hat will not fit over the hub. Subaru make special rotors to do this. On that note, out of other Subaru brakes, ONLY the 4-pots will fit with STi hubs. The caliper bracket for a 2-pot won't clear the hat on the special rotor.
-If you have an SVX, the front brakes are different and don't interchange. Rears are H-6 sized, but get that added rotor size at the upright and not from the bracket. You should be able to bolt on newer 1-pot rear brackets and calipers if you were looking for replacement parts but there isn't really an upgrade that works.


NEW: stuff about the BRZ

The BRZ uses the same rear suspension as the current Impreza/Legacy. The front brakes are standard 2-pot WRX, and the rears are from the 2010 LGT. So, putting Brembos on (something Greddy has already done), is the same as for the 08+ WRX- you take the STI caliper, redrill the rotor, and it bolts right up.

EDIT: because of the differential bore sizes and location of the fluid crossover in the caliper, you CAN NOT put sti brembos on the front of the BRZ/FRS. Subaru 4-pots will work fine swapped left to right.


Brembo brakes were installed from a 2019+ STI on my 2016 WRX. My brake pedal is very mushy tho, i have to really step on it to engage the brakes. My mechanic bled the lines twice and we still have this issue. Does anyone know if i need to upgrade to the 2019+ master cylinder and brake booster because it is the new 6pot brakes and requires more fluid or does the bleeding need to be done professionally of the ABS and such. Thanks in advance for any help!
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Old 08-17-2021, 06:29 PM   #192
CanteenPapi
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Brembo brakes were installed from a 2019+ STI on my 2016 WRX. My brake pedal is very mushy tho, i have to really step on it to engage the brakes. My mechanic bled the lines twice and we still have this issue. Does anyone know if i need to upgrade to the 2019+ master cylinder and brake booster because it is the new 6pot brakes and requires more fluid or does the bleeding need to be done professionally of the ABS and such. Thanks in advance for any help!
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Old 09-16-2021, 06:44 PM   #193
madbutcher
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Is it possible to add vented disc to rear of VA WRX without replacing the calipers entirely?
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Old 09-16-2021, 07:20 PM   #194
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Quote:
Originally Posted by madbutcher View Post
Is it possible to add vented disc to rear of VA WRX without replacing the calipers entirely?
There may be someone with a bit more experience that may chime in. But I have occasionally seen skinny vented rotors on the market here and there (doesnt seem to be too common). If they do offer them for the VA, I cannot speak for how reliable they are as there is thickness/ fatigue/ strength concerns (from my perspective).

Give the guys at KNS Brakes website a visit and/ or call and they'll get you on the right path.
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Old 01-11-2023, 05:16 PM   #195
AngelOfPaper2
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Default 2019 STI breaks on 03 WRX

Is there absolutely any way to mount the rear set of brembos from a 2019 STI on an 03?? I have the gold brembos at the moment no issues just want to upgrade again. I’ve read (correct me if I’m wrong) that I can fit the 6 pots on the from just bolting up as long as I get a large enough wheel to fit all that rotor. In this case do I just keep the 07 Sti rears on and swap to 6 pot fronts? Really looking for any possible way to do it. If not I guess I’ll accept defeat with the rears.. I can’t find threads on this anywhere that completely answered the question. Are there brackets etc. thanks!
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Old 07-07-2023, 07:40 AM   #196
discopotato03
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Hi all , I have a question no one seems to have asked .
And yes I read all of this thread .
ATM my rear brakes are the "H6" with shields removed .

If I fit 04-07 STi complete hub assemblies onto the rear of an 06 Forrester XT will the ABS all work properly .

I read that the rear STi ABS tone rings and possibly sensors are different to 06 FXT and I need to know if they send the correct signals to the ABS computer .
If the sensor connectors are different STi to FXT can plugs be changed/spliced in .

Thanks in advance and thanks for all the brake information .
Cheers , Adrian in Australia .
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Old 07-07-2023, 06:20 PM   #197
discopotato03
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Found this .

https://forums.nasioc.com/forums/sho....php?t=1557808

It appears that when going from WRX or Forrester to complete 04-07 rear hub assemblies the ABS sensor plugs are different but splicing sensors works if done properly .
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Old 07-07-2023, 08:49 PM   #198
ether947
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Quote:
Originally Posted by AngelOfPaper2 View Post
Is there absolutely any way to mount the rear set of brembos from a 2019 STI on an 03?? I have the gold brembos at the moment no issues just want to upgrade again. I’ve read (correct me if I’m wrong) that I can fit the 6 pots on the from just bolting up as long as I get a large enough wheel to fit all that rotor. In this case do I just keep the 07 Sti rears on and swap to 6 pot fronts? Really looking for any possible way to do it. If not I guess I’ll accept defeat with the rears.. I can’t find threads on this anywhere that completely answered the question. Are there brackets etc. thanks!
For any one else considering putting GR/VA rear Brembos on a GD, the only bolt-on solution that I am aware of is to use TSSFab rear knuckles with the bolt-on hubs. They aren't cheap (around $1k), and you will need all the extra parts from a GR/VA rear knuckle setup (plus axles) sans the knuckle.

https://tssfab.us/product/rear-knuckles/
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Old 09-19-2023, 04:17 PM   #199
Alexvanwyk
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Default What will be better than stock

Greetings from south africa.
I have a stock 2010 outback with a 2.0l diesel 6 speed manual, RH drive. I have oem 17" rims.
I have upped the horsepower a bit.
I regularly drive very steep and twisty mountain passes, and i want to improve the braking.
Bigger engined outbacks and tribecas were never sold here, so i cant look at their brakes.

I have 1 pot sliding calipers on all 4 wheels. E brake is electric with a drum/disk combination.

What model WRX/STI or Forester will have rotors and calipers that will be considered to be an upgrade and will fit? I may even change the master cylinder if recommended and will bolt in.

I will be sourcing calipers and carriers and such from scrapyards. Agents are not heplfull.
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