The strut tower firewall on the 08 and up Subaru WRX, STI, and Impreza platform has a known weak spot right where the brake master cylinder mounts, and that flex translates directly into a spongy, unpredictable pedal. The GRMGRM091029 GrimmSpeed Master Cylinder Brace was engineered specifically to solve this problem with a CNC laser cut 12L14 steel bracket that uses four factory mounting points. Installing the GRMGRM091029 delivers an immediate, tighter brake pedal that many drivers compare to switching to stainless steel braided lines, without any cutting or permanent modification to the car.
| Year Range | Make | Model |
|---|---|---|
| 2008-2014 | Subaru | WRX |
| 2008-2014 | Subaru | WRX STI |
| 2008-2014 | Subaru | Impreza |
| 2008-2009 | Subaru | Legacy GT |
| Detail | Value |
|---|---|
| Part Number | GRMGRM091029 |
| UPC | Not published by manufacturer |
| Material | 12L14 Carbon Steel |
| Finish | Black Powder Coat |
| Mounting Points | 4 factory mounting points |
| Installation Hardware Included | Yes |
| Brand | GrimmSpeed |
GrimmSpeed started as a small garage operation in Minneapolis, Minnesota in 2006 and has grown into one of the most trusted names in Subaru performance. What began with a focus on WRX and STI parts has expanded to Mitsubishi, Ford, MazdaSpeed, and Hyundai platforms, but the engineering philosophy has stayed the same: build parts that are tougher, smarter, and better finished than anything else on the market.
The GRMGRM091029 is a GrimmSpeed master cylinder brace for the 2008-2014 Subaru WRX, WRX STI, and Impreza, plus the 2008-2009 Legacy GT. It reinforces the firewall around the brake master cylinder to reduce flex and improve pedal feel.
Does the GRMGRM091029 require any cutting or drilling to install?No. The GRMGRM091029 uses existing factory mounting points and does not require cutting or modification of stock components.
What is the GRMGRM091029 made from?The GRMGRM091029 is made from 12L14 carbon steel that is CNC laser cut and finished in a durable black powder coat.
How many mounting points does the GRMGRM091029 use?The GRMGRM091029 uses 4 factory mounting points, more than most other braces available for this platform.
Will the GRMGRM091029 damage my master cylinder?No. The GRMGRM091029 includes a large diameter pressure cup that spreads contact pressure evenly to avoid marring or damaging the master cylinder.
What driving improvement can I expect from the GRMGRM091029?Owners typically report a noticeably firmer, more responsive brake pedal after installing the GRMGRM091029, similar to the feel of upgrading to stainless steel braided brake lines.
Does the GRMGRM091029 fit the Legacy GT?Yes. The GRMGRM091029 fits the 2008-2009 Subaru Legacy GT in addition to WRX, WRX STI, and Impreza models.
How long does it take to install the GRMGRM091029?Most installers complete the GRMGRM091029 install in about an hour using basic hand tools.
Operating, servicing, and maintaining a passenger vehicle or off road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service the vehicle in a well ventilated area, and wear gloves or wash hands frequently when servicing the vehicle. For more information visit www.P65Warnings.ca.gov/passenger-vehicle
Welcome to our exclusive Brake Cylinder Stops collection, where quality meets performance. This curated selection features a variety of brake cylinder stops designed to enhance your vehicle’s braking system, ensuring a safer and smoother driving experience. Whether you are a car enthusiast or a professional mechanic, our products are made to meet the highest industry standards. Why Choose Our Brake Cylinder Stops? Superior Quality: Each brake cylinder stop in our collection is manufactured from durable materials, providing long-lasting performance. Enhanced Safety: Our products are engineered to improve braking efficiency, helping to reduce stopping distances and increase safety on the road. Wide Selection: We offer a diverse range of sizes and configurations to fit various vehicle models, making it simple to find the right part for your needs. Benefits of Using Brake Cylinder Stops Utilizing high-quality brake cylinder stops can significantly enhance the overall performance ...
View Brake Cylinder Stops Products
Performance Brakes, Brake Pads, Rotors & Big Brake Kits Shop premium performance brake parts, brake pads, brake rotors, big brake kits, brake calipers, brake line kits, stainless steel brake lines, brake hardware, brake master cylinders, brake drums, brake shoes, hand brakes, and brake adapters at Black Ops Auto Works. This collection is built for drivers who need dependable stopping power, improved pedal feel, fade resistance, and braking confidence for street performance, towing, daily driving, racing, off-road use, and custom builds. Whether you are upgrading a muscle car, truck, SUV, Jeep, Dodge, Ford, BMW, Audi, Nissan, Honda, Subaru, Lexus, Hyundai, Mazda, Infiniti, Toyota, or track-focused vehicle, our Brakes collection includes high-quality brake system components designed for fitment, durability, and performance. Brake Parts from Top Brands Shop trusted brake brands available in our catalog, including: DBA brake rotors EBC Brakes pads and rotors Hawk Performance brake ...
View Brakes Products
Aftermarket suspension systems improve handling, ride quality, and ride height adjustment beyond what the factory suspension provides. From lowering springs and coilover kits for sport handling to lift kits and leveling kits for truck and SUV off-road capability, quality suspension components transform how a vehicle rides and handles. Popular Suspension Upgrades Popular suspension upgrades include coilover kits for adjustable ride height and damping, sport lowering springs for improved handling and reduced body roll, performance shock absorbers and strut assemblies, sway bar and end link upgrade kits, subframe brace kits, and complete suspension packages for lifted trucks and off-road SUVs. Alignment kits including camber bolts and camber arms are also frequently ordered after ride height changes. What is the difference between coilovers and lowering springs? Coilovers are complete shock and spring assemblies with adjustable ride height set by threading the spring perch on the shock...
View Suspension Products
