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Old 12-15-2019, 11:44 PM   #729
DarkSunrise
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Originally Posted by jflogerzi View Post
Looking forward to your results. Only fronts or rear as well?

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Just front. I'm running XP-10 in the rear. I've got OEM or Stoptech rear pads somewhere in my garage - I'll probably throw them on at the same time.
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Old 12-18-2019, 04:44 PM   #730
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Originally Posted by DarkSunrise View Post
Just front. I'm running XP-10 in the rear. I've got OEM or Stoptech rear pads somewhere in my garage - I'll probably throw them on at the same time.
I am getting impatient waiting to hear from you. Its embarrassing driving around with the BP-20's For a full set front and rear looks to be about 200$

And for those with the RR Sport/street style calipers here are the 2 pad sizes

Front use Pad Size: 7420
Rear use Pad Size: 7912
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ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
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Old 12-18-2019, 05:47 PM   #731
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Originally Posted by jflogerzi View Post
I am getting impatient waiting to hear from you. Its embarrassing driving around with the BP-20's For a full set front and rear looks to be about 200$

And for those with the RR Sport/street style calipers here are the 2 pad sizes

Front use Pad Size: 7420
Rear use Pad Size: 7912
Like I said, I'll put them on this weekend. If you really can't wait, you're probably safe going ahead and ordering them as they should do the job. The polymatrix q compound was designed for minimal noise and is ceramic based, so I can't see how they wouldn't be a significant improvement over the BP-20's.
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Old 12-18-2019, 05:55 PM   #732
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Originally Posted by DarkSunrise View Post
Like I said, I'll put them on this weekend. If you really can't wait, you're probably safe going ahead and ordering them as they should do the job. The polymatrix q compound was designed for minimal noise and is ceramic based, so I can't see how they wouldn't be a significant improvement over the BP-20's.
I will wait for your report. Your probably right. tracking down the rear version of the pad as well.
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ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
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Old 12-18-2019, 07:13 PM   #733
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Quote:
Originally Posted by Takumi788 View Post
For future reference.

The front rotors are from a 2004 STI OR a 2017+ 86/BRZ with the Performance Package. Easy no issues there.

The REAR ROTORS ARE NOT FROM A 2004 STI as stated on the website and in this thread. They are too wide and the inside of the rotor hits the backing plate before mounting to the hub. The correct rotors are from a 2008-2017 STI. However, if you purchase regular brand 08-17 STI rotors the bolt pattern will be wrong (5x114.3). DBA dual drills those rotors for 5x100 applications. DBA Part# 42656S-10.

The 2017+ 86/BRZ with the Performance Package has the correct rear rotors for this kit as well but are difficult to find as of writing this.

This information has been confirmed with RR-Racing
shit... So it looks like I ordered the wrong rotors...

StopTech 125.47020 aka STI 2004 5x100...

EDIT
Back to amazon with these.

Here is the correct part number
CENTRIC 12547043

Got a Pair for 114$ shipped to my door. CARID.com beat rock auto but there are not many sites who are stocking this.

Gotta Say RR Sport Front+Rear and buying your own rotors is a huge value. I will do that math but it was under 1500$
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2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber
JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's

Last edited by jflogerzi; 12-19-2019 at 05:33 PM.
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Old 12-19-2019, 07:13 AM   #734
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Thanks^^ I updated the information in my post you quoted to include the Centric part numbers.
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Old 12-20-2019, 08:08 AM   #735
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Just started a rebuild on my front stage II calipers. My passenger side inner pad wore twice as fast as the outer and a little crooked. RR Racing was very helpful with sending me a link to the wilwood site.

Here are the part numbers for a front stage II caliper rebuild. I bought them on Summit.
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Old 12-20-2019, 08:04 PM   #736
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Does your caliber have anti-knock springs installed? I’m curious if they would make a difference in pad wear by helping keep everything square.
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Old 12-21-2019, 10:20 AM   #737
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Does your caliber have anti-knock springs installed? I’m curious if they would make a difference in pad wear by helping keep everything square.
I am assuming you mean the springs behind the pistons? Yes I have those.

I took the calipers apart last night and the small pistons on the passenger side were really hard to get out. Hopefully cleaning them up and installing new o-rings fixes this issue. But honestly I am shooting in the dark here. There is no reason a caliper that is 1.5 years old should have to be rebuilt. Even with my track abuse. Unfortunately I bought them used and I am not sure what the previous owner might have done with them.

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Old 12-22-2019, 10:39 PM   #738
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Just anecdotal but I had the RR Racing Sport Performance BBK until last year, only sold it following an accident, to help finance repairs.

I ran BP10, EBC Yellowstuff and Winmax W5 on that kit, all in pad shape 7420, and all on both street and track. The BP10s were my only front brake pad the year I got the BBK and I wore them down to less than 10% within that year with combined daily driving, track and autocross, before I replaced them with EBC Yellowstuff, which I ran similarly for the next year. Then I got the W5s intended for a dedicated track pad which I used for 2 more years. The Yellowstuff and the W5s were both wore down to ~50% each, before the kit was sold.

In my experience, the Winmax W5s were just too obnoxious for street driving so they didn't get many street miles. The BP10s squeaked periodically, but were mostly quiet and the EBC Yellowstuff never made a peep.

I do think my particular calipers were manufactured to extremely tight tolerances. The BP10 pads fit in the calipers smoothly but very snug, but I had to sand down the sides of both the Yellows and the W5 pads in order for them to go into the calipers smoothly and even then, they were also very snug, there wasn't any space for side-to-side movement of the pad in the caliper.

If you find the pad has some wriggle room in the caliper to move side to side slightly when you put them in, I'd imagine that is the primary source of noise for you.

As for my opinion of each of the pads, I wouldn't recommend the BP10s to anyone when the EBC Yellowstuff is a superior product in the same class of a trackable street pad. Quieter, longer lasting, superior pedal feel and pad release characteristics (found the BP10s would sometimes stick to the rotors after releasing the pedal from a full stop) and are on par for overall heat resistance and bite. The W5 is not suitable for street driving. It will bite cold but has a spongy pedal feel when cold and is too noisy.
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Old 12-23-2019, 12:26 AM   #739
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I will wait for your report. Your probably right. tracking down the rear version of the pad as well.
I put the Polymatrix Q pads in the front today. It's about a 25% decrease in volume, but definitely not squeal-free.

Two caveats though. One, I didn't have time to put in the OEM pads in the rear, so that couldn't be contributing to the noise. Second, even with the pistons retracted, there wasn't enough room to fit the shims. So with a liberal coating of anti-squeal paste and using the shims, that could quiet things down further. Possibly.

Performance-wise, the cold bite is surprisingly good for a ceramic-based compound. But the pedal is slightly softer.
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Old 12-23-2019, 12:31 AM   #740
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Originally Posted by DarkSunrise View Post
I put the Polymatrix Q pads in the front today. It's about a 25% decrease in volume, but definitely not squeal-free.



Two caveats though. One, I didn't have time to put in the OEM pads in the rear, so that couldn't be contributing to the noise. Second, even with the pistons retracted, there wasn't enough room to fit the shims. So with a liberal coating of anti-squeal paste and using the shims, that could quiet things down further. Possibly.



Performance-wise, the cold bite is surprisingly good for a ceramic-based compound. But the pedal is slightly softer.
Interesting. We're you using the shims with the BP-20/10s? Thanks for the update. I going to wait for my rear BBK sport kit to come in. It shifts the brake bias back to rear so maybe this might help. But if this does not I might go for the ebc yellows based on what the previous poster mentioned. I have the part numbers for this pad size.

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RCE T2's, SPC LCAs -4/2.6 camber
JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
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Old 12-23-2019, 12:36 AM   #741
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Interesting. We're you using the shims with the BP-20/10s? Thanks for the update. I going to wait for my rear BBK sport kit to come in. It shifts the brake bias back to rear so maybe this might help. But if this does not I might go for the ebc yellows based on what the previous poster mentioned. I have the part numbers for this pad size.

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Yes was using the shims with the BP-20's, so obviously they weren't that effective haha. But every bit helps so I'll throw them in after the pads have worn down a little.
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Old 01-04-2020, 08:10 PM   #742
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RR Legitimacy Confusion

For the past month, I have been grazing through the forums, all the FB 86 enthusiast and track pages, and been in contact with RR and about a dozen people who have used their kits but I still can't make a decision. My observations have been somewhat split between people who swear against RR and call their products garbage/trash/low quality/worse than OEM and then the other half loving their kits/wilwoods and testifying to its greatness. Likewise some customers incredibly disappointed with the build quality and performance yet others are the complete opposite.

Am I crazy?

Why is there such a discrepancy on this kit between the community? I understand that products have their supporters/haters but I can't seem to find a consensus on how legitimate this kit is. I've been going back and forth on proceeding with purchasing them but each time I was swayed away I've been told to look at AP sprint, endurance, stoptech etc. but I don't want to count RR out for their value and support I've seen.

I'm interested in the stage 1 kit and leaving my rear oems alone. I autocross regularly with a handful of track days here and there and would like to improve my braking performance but don't want to drop turbo-like money. I know they're not the best in the business but I just want to know if they're legitimate and good to run considering bias & performance
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