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Old 07-29-2019, 09:46 PM   #1
WRX2018VA
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Impreza WRX Upgraded Brakes and Wheels - 6 pot Brembos

After completely trashing the stock brakes at GridLife this year, decided to take the plunge and upgrade the stock WRX brakes to the STi 6 Pot/2 Pot Brembos. Love to do Trackcross and HPDE so the brakes really get a work out.

Downside is the much larger calipers will not fit behind the stock 2018 Limited WRX 18x8.5" wheels thus the new rims are 18x9.5 Rota KB-Rs +38mm to get the edge closer to the opening, in gloss black. MachV in Sterling, Va did the conversion as I have limited tools and space to do the change.

Straight out of the box, the calipers show a bit of rub wear. But hey, they are brake calipers so not a big deal.


The front calipers are HUGE compared to the stock WRX calipers, but actually, the overall set up is a bit lighter. Front STi rotor is 1/2 in larger than the WRX. Also added braided brake lines and Motul brake fluid.



Backs are tiny by comparison.


Here is the pair, in the air:


The Rota KB-Rs in 18x9.5 are an inch wider but about 2lbs lighter than the stock wheel, and are currently wearing the stock rubber, which is bowed out a bit. But after a few more track sessions will upgrade to wider tires better suited to the new rims.


Love the way the Brembos show through the gloss black Rotas.



Performance is amazing, with much better pedal feel and no fade even after repeated hard stops from 60-70 mph. Currently on stock Subaru WRX pads but will run track pads for HPDE/GridLife. Dead silent on the road, but a little dusty.

So now have to sell my stock 18" WRX rims, as well as the 17" snow tire/rim set up I ran last year.
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Last edited by WRX2018VA; 07-29-2019 at 10:06 PM. Reason: Added detail
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Old 07-30-2019, 08:38 AM   #2
deanstevenson
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Nice upgrade.

Where did you source the new calipers?
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Old 07-30-2019, 08:46 AM   #3
Patrick Olsen
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"The Interior & Exterior Modification & Care forum on NASIOC is for discussion about body kits, wings, lips, side skirts, seats, steering wheels, and other interior, or exterior bits, in regard to their installation or maintenance."

"The Brakes, Steering & Suspension forum on NASIOC if for technical discussion about any aspect of a cars [sic] handling performance. Excludes tires and wheels."

I think you'd be better served putting this in the Brakes, Steering & Suspension forum.

What were the component weights for the front brakes? Did you include the brake pads when you said the 6-pots are lighter? I know when I went from 1st gen 4-pots to 2nd gen 6-pots on my CTS-V, the 6-pot pads were significantly heavier.
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Old 07-31-2019, 09:40 AM   #4
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Quote:
Originally Posted by deanstevenson View Post
Nice upgrade.

Where did you source the new calipers?
Hi Dean: Directly from Subaru, via MachV Motorsports. My local dealer quoted $12k for the total swap and MachV was half that. My dealer actually quoted a price just for the calipers that was more than MachV charged for everything.
Not sure why my local dealer was so bloody expensive.

I was at MachV and actually opened the boxes from Subaru myself to check out the new calipers before installation. LOTS of online sources are available as well.

And I can confirm that even though they are packaged extremely well, the calipers come out of the wrapping with some edge wear.
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Old 07-31-2019, 09:45 AM   #5
WRX2018VA
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Thanks Patrick, somehow missed that. Any idea how to move my message into that thread?

Dan, the owner of MachV has an extensive thread here where he talks about wheel fitment for the brake upgrades and also mentions the weight of the brake set up. I was surprised he said the 6pots are lighter than the stock WRX setup but I have not weighed them myself.

I can report that the stock brake pads are VERY dusty. Did a track cross this weekend and gave the brakes a good work out. My nice new glossly wheels now have a nice matte finish.
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Old 07-31-2019, 07:13 PM   #6
Sheruda45
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Default Damn that’s clean 👏🏻

I need to do this
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Old 08-01-2019, 04:00 PM   #7
WRX2018VA
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Quote:
Originally Posted by Sheruda45 View Post
I need to do this
If you are just street driving, I'm not sure the looks are worth the price tag unless you can get a set from a totaled STi and do the work yourself. For me, the difference was my track driving and expectations of doing more HPDE in the near future.

Good luck!
Chris
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Old 08-01-2019, 05:25 PM   #8
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looking good! I need this
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Old 08-01-2019, 09:07 PM   #9
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6,000 dollars of brakes. You’re a man I respect.
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Old 08-02-2019, 09:25 AM   #10
WRX2018VA
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At the Track Thanks!

Quote:
Originally Posted by R15 View Post
6,000 dollars of brakes. You’re a man I respect.

LOL.. I figure, STOP first, go fast second....But having those bright yellow calipers certainly doesn't hurt in the looks department.

Next up, bigger tires to fit the rims and then street/track struts. Once the handling is sorted (Lots of HPDE!!), then go for more horsepower. Right now, speed is not my problem. Got the braking sorted so on to the next challenge...
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Old 08-02-2019, 03:12 PM   #11
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Quote:
Originally Posted by Patrick Olsen View Post
What were the component weights for the front brakes? Did you include the brake pads when you said the 6-pots are lighter?
2015 WRX:
- Front rotor 21.6 lbs.
- Front caliper with pads 15.4 lbs.
- Entire front system 37.0 lbs.

2018 STI:
- Front rotor 23.3 lbs.
- Front caliper with pads 12.7 lbs.
- Entire front system 36.0 lbs.

Dan
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Old 08-02-2019, 11:06 PM   #12
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Awesome setup! I didn't realize the 18+ Brembo's were so much!
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Old 08-03-2019, 12:21 PM   #13
WRX2018VA
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Default Dropped a pound, gained a lot of brakes!

Thanks Dan!

Quote:
Originally Posted by Mach V Dan View Post
2015 WRX:
- Front rotor 21.6 lbs.
- Front caliper with pads 15.4 lbs.
- Entire front system 37.0 lbs.

2018 STI:
- Front rotor 23.3 lbs.
- Front caliper with pads 12.7 lbs.
- Entire front system 36.0 lbs.

Dan
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Old 08-06-2019, 11:02 AM   #14
Patrick Olsen
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Quote:
Originally Posted by WRX2018VA View Post
Hi Dean: Directly from Subaru, via MachV Motorsports. My local dealer quoted $12k for the total swap and MachV was half that. My dealer actually quoted a price just for the calipers that was more than MachV charged for everything.
Not sure why my local dealer was so bloody expensive.
Not sure whereabouts in NoVA you are or which dealer you talked to, but Stohlmann Subaru by Tysons does reduced pricing if you go through their website (https://parts.stohlmansubaru.com/). If I call them or walk up to the Parts window, they'll bring up MSRP. But if I order the parts ahead of time on the website and select "local pick-up" (so shipping goes to $0), the pricing is significantly better - varies depending on the part in question, but I've seen as much as 30-35% off MSRP. Not saying it would've gotten you as big a discount as Mach V was able to get, but something to keep in mind when you want to order other OEM parts in the future.

Quote:
Originally Posted by Mach V Dan View Post
2015 WRX:
- Front rotor 21.6 lbs.
- Front caliper with pads 15.4 lbs.
- Entire front system 37.0 lbs.

2018 STI:
- Front rotor 23.3 lbs.
- Front caliper with pads 12.7 lbs.
- Entire front system 36.0 lbs.
Good info, thanks, Dan!
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Old 08-06-2019, 05:38 PM   #15
toXSPC
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Are the 2018 six pots actually the same as the ones used on the RA-R and S206 way back when ?
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Old 08-06-2019, 10:35 PM   #16
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Love the yellow behind black. Very Nice.
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Old 08-07-2019, 11:29 AM   #17
WRX2018VA
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Quote:
Originally Posted by Patrick Olsen View Post
Not sure whereabouts in NoVA you are or which dealer you talked to, but Stohlmann Subaru by Tysons does reduced pricing if you go through their website (https://parts.stohlmansubaru.com/). If I call them or walk up to the Parts window, they'll bring up MSRP. But if I order the parts ahead of time on the website and select "local pick-up" (so shipping goes to $0), the pricing is significantly better - varies depending on the part in question, but I've seen as much as 30-35% off MSRP. Not saying it would've gotten you as big a discount as Mach V was able to get, but something to keep in mind when you want to order other OEM parts in the future.


Good info, thanks, Dan!
Hi Patrick - thanks for that and I have done that with Stohlmann in Dulles (where I bought the car) for some other things I've picked up. I talked to my service manager there so did get the lower price quoted (after a bit of discussion about 'owner supplied parts' which was strange...) but the price was still astronomical.
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Old 08-07-2019, 11:40 AM   #18
WRX2018VA
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Quote:
Originally Posted by toXSPC View Post
Are the 2018 six pots actually the same as the ones used on the RA-R and S206 way back when ?
I've tried to look at pictures of the S206 on the internet but it looks to me like they are different calipers. I could easily be wrong, however.

They do look like the calipers used on the RA-R.
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Old 08-07-2019, 02:28 PM   #19
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If you get dedicated track pads, talk with the manufacturer to see if the compound is compatible with the pads you're currently using. Some are not (Hawk blacks, for example) and you'll find that material on the rotor from stock pads result in overheating brakes. I literally melted a set of seals in calipers once because of this. I went to dedicated pads and rotors for track only duty.
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Old 08-07-2019, 09:49 PM   #20
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I love the look on my 19’ STi although cleaning the calipers is soo annoying, they’re noticeably dirty just after one or two drives...but im glad I ceramic coated mine to make cleaning much easier 😬
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Old 08-08-2019, 09:35 AM   #21
WRX2018VA
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Quote:
Originally Posted by Jack View Post
If you get dedicated track pads, talk with the manufacturer to see if the compound is compatible with the pads you're currently using. Some are not (Hawk blacks, for example) and you'll find that material on the rotor from stock pads result in overheating brakes. I literally melted a set of seals in calipers once because of this. I went to dedicated pads and rotors for track only duty.
Jack,

Thanks for the advice. I completely cooked the stock brakes (and rotors), hence the upgrade. Before I head out to HPDE I will definitely see about the correct pads. Thanks!
Chris
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Old 08-08-2019, 11:42 AM   #22
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Nice! I got the flat black KB-Rs for my '19 as STI as a winter setup and I liked the look so much I just decided to run them all the time.
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Old 08-09-2019, 08:34 AM   #23
WRX2018VA
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Blueteamno: I really do like the looks of the KB-R's and they do show off the calipers really well. These will be my daily wheels. I'm planning on running the Crucial wheel in either satin gun metal or maybe even gold as my track set up. About 3 lbs lighter than the Rotas.
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Old 08-13-2019, 09:57 AM   #24
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I have Enkei Ts10 18x9.5 +35 on my 2016 WRX. I should be fine in terms of clearance for STI brembos right? (assuming I trim back the dust shield)

Also, I've seen that the 2008 through 2017 STI brembo's are all compatible with the STI sized rotors. Are all of the brembos from 2008 through 2017 the same though? all 4 pot in the front? maybe slightly different models or dimensions throughout the years?
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Old 08-14-2019, 09:24 AM   #25
WRX2018VA
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Quote:
Originally Posted by 2016WRX_CT View Post
I have Enkei Ts10 18x9.5 +35 on my 2016 WRX. I should be fine in terms of clearance for STI brembos right? (assuming I trim back the dust shield)

Not sure but you might check the thread Dan from MachV posted on wheels and brake upgrades. Definitely Yes on the trimming the dust shield - but that is not a big deal.

Also, I've seen that the 2008 through 2017 STI brembo's are all compatible with the STI sized rotors. Are all of the brembos from 2008 through 2017 the same though? all 4 pot in the front? maybe slightly different models or dimensions throughout the years?
Yes, the four pot Brembos are from 2008-2017. I have the six pot from the 2018 STi. I'm not exactly sure if the rotor dimension changed in '18 or not.

It is a terrific upgrade however. I am very much looking forward to my next HPDE session, hopefully in a few weeks!
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