-10%
Click to zoom in
SKU: 673 487 A | UPC: 4996338051455
Cusco Rear SUBFRAME Brace Lower Bar 97+GC8-GDA-GDB Impreza
Cusco Rear Subframe Brace Lower Bar (MPN 673 487 A) reinforces the rear subframe on 1997+ Subaru Impreza GC8 GDA GDB chassis models including WRX and STI variants. This four-point steel brace ties the subframe mounts together to cut chassis flex during hard cornering and acceleration. Drivers notice immediate gains in rear-end traction and steering response on street or track.
Key Features
- Four-Point Design: Connects all four lower subframe mounting points to distribute stress evenly and prevent twisting under load.
- High-Strength Steel Tubing: 38mm diameter pipes with 3mm wall thickness deliver rigid support without adding excess weight.
- Powder Coated Finish: Black electro-deposition coating resists corrosion and maintains appearance in harsh conditions.
- Bolt-On Installation: Uses factory mounting holes for straightforward fit without drilling or cutting.
- Motorsport Proven: Developed for rally and drift applications to handle high lateral G-forces reliably.
Product Notes
- Inspect subframe bushings prior to installation for optimal performance.
- Clean mounting surfaces thoroughly for secure bolting.
- Ships fully assembled ready for install. torque bolts to Cusco specs.
Installation Notes
- Professional installation recommended.
- Raise vehicle securely and support rear subframe during brace fitting.
- Includes all necessary M8 hardware. compatible with OEM exhaust and suspension.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2007 | Subaru | Impreza | 2.5i |
| 1997 | Subaru | Impreza | Brighton |
| 1997-2001 | Subaru | Impreza | L |
| 1997-2004 | Subaru | Impreza | Outback |
| 2005-2007 | Subaru | Impreza | Outback Sport |
| 1998-2005 | Subaru | Impreza | RS |
| 2002-2004 | Subaru | Impreza | TS |
| 2002-2007 | Subaru | Impreza | WRX |
| 2006-2007 | Subaru | Impreza | WRX Limited |
| 2004-2007 | Subaru | Impreza | WRX STI |
| 2007 | Subaru | Impreza | WRX STI Limited |
| 2006-2007 | Subaru | Impreza | WRX TR |
Why Choose Cusco?
- Established Japanese brand with decades in JDM tuning.
- Engineered for Subaru rally platforms worldwide.
- CAD-designed for exact chassis fit and maximum rigidity gains.
Frequently Asked Questions
-
Q: Will this fit my 2002 GC8 Impreza RS?
A: Yes it bolts directly to GC8 GDA GDB subframes on 1997-2007 Impreza models listed including RS WRX and STI variants. -
Q: What material and finish does it use?
A: Seamless steel tubing with black powder coat for strength and long-term rust protection. -
Q: Is there a warranty and install difficulty?
A: Backed by Cusco limited warranty. 1-2 hour DIY install with basic tools though professional tuning advised.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective cardboard box 42 x 10 x 6 inches
- Weight: 10 lbs
Chassis Bracing
Chassis bracing reduces structural flex in unibody and body-on-frame vehicles, improving handling precision, steering response, and suspension geometry consistency under cornering loads. Front strut braces, rear chassis braces, and underbody reinforcement kits all target different flex points depending on the vehicle and build goals. Popular Upgrades The most popular chassis bracing upgrades include front upper strut tower bars for reduced front-end flex, rear lower chassis braces for improved rear subframe rigidity, underbody X-braces and torque boxes for full chassis stiffening, and sway bar end link braces for more predictable corner entry behavior. Many enthusiasts pair front and rear bracing for the greatest improvement in overall chassis feel. What does chassis bracing actually do for handling? Chassis flex causes subtle but measurable changes in suspension geometry during cornering and acceleration. Reducing flex with bracing keeps the suspension working as designed, which tr...
View Chassis Bracing Products
Cusco
Cusco is a Japanese performance parts manufacturer with over 40 years of motorsports experience, producing coilovers, suspension braces, differentials, roll cages, and chassis reinforcement components for top sport compact and all-wheel-drive platforms. Cusco parts are built to motorsport tolerances and are used by professional race teams competing in Japanese domestic market racing series alongside street performance enthusiasts worldwide.Popular UpgradesCusco coilover kits, strut tower braces, and rear member braces are the most popular products for Subaru WRX and STI, Toyota 86 and GR86, Mazda Miata, Honda Civic, and Mitsubishi Evo platforms. Cusco limited-slip differentials and differential braces provide improved traction and reduced chassis flex for track and autocross builds on AWD platforms. Cusco adjustable control arms and camber kits allow precise alignment correction after lowering springs or coilovers are installed.What chassis bracing does Cusco make for the Subaru WRX...
View Cusco Products
Suspension
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