Wilwood BBK for WRX - Fit to BRZ - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

swift996 · 04-02-2013, 09:32 AM

First off, I can't take credit for the idea because I bought them from Scooby South because he wasn't able to use them in the STX class.

They are only the 4-pot calipers and the rotor diameter is only 12" (compared to the stock 11.5"). They shave 16lbs per corner and are about 1mm thinner. However, since they are designed for a 3300lb WRX, I'm not worried on a BRZ.

There was one exception to this kit, the bolts supplied don't work with the bracket, you'd have to order the 08+ specific bolts. The Part# is 230-10425 (they are 7/16-20 x 1.50 hex bolts - you will need 4) for those interested.

Kit part #140-9193 Subaru WRX 03+

The kit:

Install - I had Brady up at Pure Automotive install them. It was pretty straight forward. The kit comes with everything including stainless lines.

Review - The car has really come to life. The brake feel and bite is much improved. The car is so much faster on back roads now. I'm very happy with the purchase. I had a little bit of clanking noise (perhaps pad knock back) early but that has seemed to go away. It could have just been breaking the pads in. This is my first aftermarket kit. With BMW and Porsche you have a lot of OEM options.

The kit runs about $1K, which puts it at a price point between a stoptech slotted kit and the 6-pot 13" wilwood kit that runs about $1.7K. So this is a viable option for guys on a budget but want some improved performance.

FYI - That strut assembly is not mine

I'm sure from a roll they look real nice, but parked..almost stealth:

Driver's Side:

Passenger's Side:

mrk1 · 04-02-2013, 10:03 AM

Thats a great looking option for a realistic brake upgrade. Do you run your car in the snow? My only reservation about a wilwood kit is no dust boots.

And WOW is that a lot of weight savings!

Beyer Subaru · 04-02-2013, 11:02 AM

Looks great. Thanks for sharing.

m.wood0213 · 04-02-2013, 11:05 AM

this is really good info thanks!

JDMenrique · 04-02-2013, 11:07 AM

@PRORICAN

more affordable brake option

industrial · 04-02-2013, 11:36 AM

Looks like everything went together great. Do you have any plans on track days or autocross? Would love to get your impressions on how these do with proper track pads and hard use. Dropping 32 pounds of rotating unsprung mass is huge man!

Anthonytpt · 04-02-2013, 11:42 AM

I've been waiting to see this - thank you!

swift996 · 04-02-2013, 11:51 AM

Quote:

Originally Posted by mrk1

Thats a great looking option for a realistic brake upgrade. Do you run your car in the snow? My only reservation about a wilwood kit is no dust boots.

And WOW is that a lot of weight savings!

I'm in the Northern VA area now so not a lot of snow to worry about.

Quote:

Originally Posted by industrial

Looks like everything went together great. Do you have any plans on track days or autocross? Would love to get your impressions on how these do with proper track pads and hard use. Dropping 32 pounds of rotating unsprung mass is huge man!

I'm doing Mid-Ohio June 10th. I'm hoping to make it to an autoX or out to Summit Point (road course) prior. I'm really waiting on my coilovers so I can put those on and my new wheels/tires. I've done some spirited driving with them but nothing heavy as far as track use. I think this will be good for the autocross guys and/or the HPDE/occasional track guys.

swift996 · 04-02-2013, 11:58 AM

I put a little more detail in my build thread but I should mention the reduction of up-sprung weight can be felt immediately. The car feels more direct on turn in and more responsive to the throttle. It doesn't necessary feel faster but it feels more responsive for sure. I'll be dropping another 11lbs off the front axle when I get my FA20Club header in. So with my current upgrades, I'll be running with 50lbs or so off the front axle. I'm sure this is something fantastic for the autocross types.

Lee358 · 04-02-2013, 12:12 PM

This looks great and the weight saving is amazing... Will this change the break bias much?

Sent from my iPhone using Tapatalk

swift996 · 04-02-2013, 12:14 PM

Quote:

Originally Posted by Lee358

This looks great and the weight saving is amazing... Will this change the break bias much?

Sent from my iPhone using Tapatalk

I'm still on stock springs/struts and there is a bit more dive. I plan to upgrade the rears to stop tech slotted rotors, some pads, and SS lines when it's time to replace them. They feel a little more front bias but nothing that makes it feel unstable. Just a hint of more bias but the OEM set up used the fronts a lot too.

JRitt · 04-02-2013, 01:05 PM

Are the pistons sizes and disc diameter combination on this kit sized to ensure proper brake bias on the FT86? Do the discs actually have any additional thermal mass vs. the stock discs?

Slapping on parts designed for a different platform may actually hurt performance more than help. Obviously, the weight savings is great, but your stopping distances may actually increase instead of decrease vs. stock. That's not something you can easily determine through seat-of-the-pants testing. You need data acquisition or a radar gun to do so.

We are talking about one of the most critical safety items on your car folks, and I don't see a shred of evidence that any scientific design or actual testing went into this kit with regards to being used on the FT86.

I've seen this sort of thing on other forums over the years, and threads like this make me nervous as h*ll. Please guys, be careful!

swift996 · 04-02-2013, 01:56 PM

^ The stopping distance is improved. I don't have any data but from a couple 30/60-0 tests they certainly stop quicker. As for the other questions, I'm not certain. The kit obviously wasn't designed for the BRZ, but being bigger and lighter is a plus for me. A lot of cars use the same rotors/calipers. My logic is if it can stop a 3300lb WRX faster, it should stop a 2700lb BRZ faster. However, specific to actual performance, I just have a feel, no data or extensive testing. The car still feels balanced, a slight bias to the front with the improved bite. It's light years ahead of stock, not sure how it stacks up to other aftermarket kits for the BRZ.

WilwoodDiscBrakes · 04-02-2013, 02:58 PM

Here is our 6 piston 12.88" rotor kit specifically designed for the FRS/BRZ/86 that fits inside the OEM 17" rims. http://www.wilwood.com/BrakeKits/BrakeKitSearch.aspx?year=2013&make=Scion&model=FR-S&option=All&whl=17

Install Video:
[ame="http://youtu.be/ZP6pQ4-tKFo"]http://youtu.be/ZP6pQ4-tKFo[/ame]

04-02-2013, 11:58 AM	#9
swift996 Senior Member Join Date: Nov 2011 Drives: Subaru BRZ Limited 6MT Location: Winston-Salem, NC Posts: 2,432 Thanks: 712 Thanked 955 Times in 545 Posts Mentioned: 47 Post(s) Tagged: 0 Thread(s)	I put a little more detail in my build thread but I should mention the reduction of up-sprung weight can be felt immediately. The car feels more direct on turn in and more responsive to the throttle. It doesn't necessary feel faster but it feels more responsive for sure. I'll be dropping another 11lbs off the front axle when I get my FA20Club header in. So with my current upgrades, I'll be running with 50lbs or so off the front axle. I'm sure this is something fantastic for the autocross types. __________________ Innovate Supercharged Black Limited BRZ 6-Speed MT(Build Thread) 2010 Cadillac CTS-V Sedan M6 w/550whp (Build Thread)

04-02-2013, 01:05 PM	#12
JRitt Join Date: Feb 2012 Drives: 2012 BRZ Premium WRB 6MT Location: Charlotte NC Posts: 726 Thanks: 230 Thanked 1,423 Times in 381 Posts Mentioned: 81 Post(s) Tagged: 3 Thread(s)	Are the pistons sizes and disc diameter combination on this kit sized to ensure proper brake bias on the FT86? Do the discs actually have any additional thermal mass vs. the stock discs? Slapping on parts designed for a different platform may actually hurt performance more than help. Obviously, the weight savings is great, but your stopping distances may actually increase instead of decrease vs. stock. That's not something you can easily determine through seat-of-the-pants testing. You need data acquisition or a radar gun to do so. We are talking about one of the most critical safety items on your car folks, and I don't see a shred of evidence that any scientific design or actual testing went into this kit with regards to being used on the FT86. I've seen this sort of thing on other forums over the years, and threads like this make me nervous as hll. Please guys, be careful! __________________ Essex Parts Services- AP Racing / Ferodo / Spiegler / Versodeck* Jeff Ritter\|Mgr.- High Performance Division www.essexparts.com

04-02-2013, 01:56 PM	#13
swift996 Senior Member Join Date: Nov 2011 Drives: Subaru BRZ Limited 6MT Location: Winston-Salem, NC Posts: 2,432 Thanks: 712 Thanked 955 Times in 545 Posts Mentioned: 47 Post(s) Tagged: 0 Thread(s)	^ The stopping distance is improved. I don't have any data but from a couple 30/60-0 tests they certainly stop quicker. As for the other questions, I'm not certain. The kit obviously wasn't designed for the BRZ, but being bigger and lighter is a plus for me. A lot of cars use the same rotors/calipers. My logic is if it can stop a 3300lb WRX faster, it should stop a 2700lb BRZ faster. However, specific to actual performance, I just have a feel, no data or extensive testing. The car still feels balanced, a slight bias to the front with the improved bite. It's light years ahead of stock, not sure how it stacks up to other aftermarket kits for the BRZ. __________________ Innovate Supercharged Black Limited BRZ 6-Speed MT(Build Thread) 2010 Cadillac CTS-V Sedan M6 w/550whp (Build Thread)

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04-02-2013, 09:32 AM	#1
swift996 Senior Member Join Date: Nov 2011 Drives: Subaru BRZ Limited 6MT Location: Winston-Salem, NC Posts: 2,432 Thanks: 712 Thanked 955 Times in 545 Posts Mentioned: 47 Post(s) Tagged: 0 Thread(s)	Wilwood BBK for WRX - Fit to BRZ First off, I can't take credit for the idea because I bought them from Scooby South because he wasn't able to use them in the STX class. They are only the 4-pot calipers and the rotor diameter is only 12" (compared to the stock 11.5"). They shave 16lbs per corner and are about 1mm thinner. However, since they are designed for a 3300lb WRX, I'm not worried on a BRZ. There was one exception to this kit, the bolts supplied don't work with the bracket, you'd have to order the 08+ specific bolts. The Part# is 230-10425 (they are 7/16-20 x 1.50 hex bolts - you will need 4) for those interested. Kit part #140-9193 Subaru WRX 03+ The kit: Install - I had Brady up at Pure Automotive install them. It was pretty straight forward. The kit comes with everything including stainless lines. Review - The car has really come to life. The brake feel and bite is much improved. The car is so much faster on back roads now. I'm very happy with the purchase. I had a little bit of clanking noise (perhaps pad knock back) early but that has seemed to go away. It could have just been breaking the pads in. This is my first aftermarket kit. With BMW and Porsche you have a lot of OEM options. The kit runs about $1K, which puts it at a price point between a stoptech slotted kit and the 6-pot 13" wilwood kit that runs about $1.7K. So this is a viable option for guys on a budget but want some improved performance. FYI - That strut assembly is not mine I'm sure from a roll they look real nice, but parked..almost stealth: Driver's Side: Passenger's Side: __________________ Innovate Supercharged Black Limited BRZ 6-Speed MT(Build Thread) 2010 Cadillac CTS-V Sedan M6 w/550whp (Build Thread)

04-02-2013, 10:03 AM	#2
mrk1 Senior Member Join Date: Mar 2013 Drives: Sterling BRZ Ltd Location: New England Posts: 1,702 Thanks: 403 Thanked 1,389 Times in 671 Posts Mentioned: 21 Post(s) Tagged: 2 Thread(s)	Thats a great looking option for a realistic brake upgrade. Do you run your car in the snow? My only reservation about a wilwood kit is no dust boots. And WOW is that a lot of weight savings!

04-02-2013, 11:02 AM	#3
Beyer Subaru Senior Member Join Date: Sep 2012 Drives: 2013 BRZ SWP 6AT Ltd Location: Alexandria, VA. Posts: 1,607 Thanks: 859 Thanked 776 Times in 485 Posts Mentioned: 37 Post(s) Tagged: 1 Thread(s)	Looks great. Thanks for sharing.

04-02-2013, 11:36 AM	#6
industrial Add lightness! Join Date: Apr 2012 Drives: 17' WRX Location: Boston Posts: 1,253 Thanks: 380 Thanked 888 Times in 411 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	Looks like everything went together great. Do you have any plans on track days or autocross? Would love to get your impressions on how these do with proper track pads and hard use. Dropping 32 pounds of rotating unsprung mass is huge man!

04-02-2013, 12:12 PM	#10
Lee358 Senior Member Join Date: Jun 2012 Drives: nissan frontier, DGM MT BRZ Location: North nj Posts: 1,576 Thanks: 404 Thanked 419 Times in 254 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	This looks great and the weight saving is amazing... Will this change the break bias much? Sent from my iPhone using Tapatalk

04-02-2013, 02:58 PM	#14
WilwoodDiscBrakes Junior Member Join Date: Jan 2013 Drives: 2013 Scion FRS Location: Camarillo, CA Posts: 4 Thanks: 0 Thanked 24 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Here is our 6 piston 12.88" rotor kit specifically designed for the FRS/BRZ/86 that fits inside the OEM 17" rims. http://www.wilwood.com/BrakeKits/BrakeKitSearch.aspx?year=2013&make=Scion&model=FR-S&option=All&whl=17 Install Video: [ame="http://youtu.be/ZP6pQ4-tKFo"]http://youtu.be/ZP6pQ4-tKFo[/ame]

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