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RR Racing Sport Performance Rear 4 Piston Brake Kit for Subaru WRX
WRX Competition Rear Big Brake Kit

Our Price: $901.57

Availability: Usually Ships in 1 to 2 Weeks
Product Code: SWRXRBK012

SS Brake Lines:

Caliper Color*:




Description Technical Specs
Buy 2 Sports Performance brake kits (e.g., front and back) and get $100 off your order, or if you buy any other Front BBK with total order value of $1800 or more, you can get $150 off your order!

Our Sport Performance kit was designed as a lower cost alternative to our Competition 2 piece rear big brake kits. The Sport Performance kit utilizes OEM size (315mm) one-piece STi rear rotors which retain full e-brake functionality. Calipers feature full billet aluminum construction and 4 stainless steel pistons for extremely effective clamping torque. Compared to our Competition rear kits, the Sport Performance kit rotors are smaller (315mm vs 330mm), and the calipers/pads are smaller as well.

As a result of our extensive race development effort on the Element Tuning Time Attack FR-S, we have learned that braking on the 86 platform benefits tremendously from proper brake bias. Insufficient rear bias results in poor braking performance, excessive heat and wear of the front brakes, and unwanted ABS and “ice mode” activation.

Please note that in order to reduce the price of the kit, stainless steel brake lines are optional with this kit. This kit will work with stock brake lines.

All of our brake kits include BP10 pads with other upgrade options available.

It is important to note that our kits are different from other brake kits on the market that use Wilwood calipers -- we use much better calipers, our rotors are larger and thicker made of superior materials, and our kits are much better priced! Why are our kits cost so much less than our competition? We focus on value and quality in our design, and we sell directly to you bypassing several layers of distributors and re-sellers that can more than double the price of a product.

Please also note that we now offer caliper color options (please refer to options for this product) using powder coated paints with RR Racing black logo (no Wilwood logo). Please refer to the photograph of the silver caliper for this product. All calipers for this product come with RR Racing logo. Our powder coating quality is good, but it is NOT equivalent to original manufacturer's quality. Some indentations on the rear of the caliper (areas not visible from the side of the car) may not be perfectly covered.

All components in this product kit, with the exception of the brake rotor castings, are proudly engineered and manufactured here in the United States of America.
Please click on one of the links below for more relevant detailed information about our approach to engineering great braking systems for your BRZ/FR-S:
Brake System Design by RR Racing
Brake Pad Selection Guide
RR Racing BRZ/FR-S Project.

Note: The rear competition brake kit is recommended for racing purposes only. Due to the aluminum rotor hat, usage of this kit as an "emergency" brake will result in rapid wear and potential ineffectiveness of the rear e-brake. This rear brake kit retains the e-brake function as a parking brake only!

Compatibility Table
Make Model Year Range
Subaru WRX 2015-2017

Our brake products endorsements keep growing! Every time a serious racer tries our brakes on the track, they get excellent reviews and endorsement.

Phil Grabow #71 Element Tuning: "RR-Racing stepped up to the plate to design braking system that addresses the weakness of the factory imbalance in brake force distribution. Not only do we have much improved braking balance, I have never ran a more powerful braking package on any race car I've driven!"

Neal Wiebmer #65, Club 86: "Installed RR Racing State II front and Competition rear brake kits and after testing on the track made the following statement: "Saturday, I was running the first session, right at 8am. I hopped on the track and after one lap had the brakes [stage II competition front and rear brake kit] bedded perfectly. The stopping power was AMAZING. I am used to running pads with a bit more of an initial bite, but after getting used to these pads, I felt very confident with them. Consistency was great, I never went into a braking zone having to guess/hope I had enough brake. It was well over 100 degrees all day and the brakes stayed absolutely consistent the whole time, my tires however, did not."
[After another track session] "I actually just did another track day Monday and was even more satisfied. These brakes are so unbelievably consistent."

Another FR-S race car that is using our Stage IV front and rear brake systems is Gear One SCCA race team FR-S. This car participates in endurance races and their drivers love the new RR Racing brake systems.

Andy Moench #86: "I just finished a 3 day event at the track and I am impressed even more with the kit. I set personal best times and finally eliminated the worry of what my brakes would do in each corner. Also, the balance of the front and rear kit is excellent. Where I like to trail brake into some of the corners never upset the car too much. BTW I am on WedSport TC105N 17x9 +35 and plenty of clearance. I also run Maxxis RC1 r comps and a Jackson Racing Supercharger so my car is harder on brakes than a stock FR-S. Here are some pictures. I highly recommend these brakes."

Please also refer to our Testimonials page

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 1 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 2018 subaru wrx March 15, 2023
Reviewer: Ben Creed from McClellanville, SC United States  
Awesome experience very fast turnaround. I even had one of the rear calipers start leaking witch they said they never heard of this happening they sent me a new one no charge Simon was great to deal with. And it was a great price to top it off highly recommended

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