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SKU: 6A1 492 SP | UPC: 4996338048868
Cusco Power Brace, Seat Rail Plus Set (Right & Left) 15-21 Subaru WRX STi & WRX
Cusco Seat Rail Plus Set delivers targeted reinforcement to the floorpan and seat rails on 2015-2021 Subaru WRX STI sedans (VA chassis). This driver and passenger side brace kit enhances chassis stiffness to sharpen cornering response and stability during aggressive driving. Includes integrated harness mounting points for secure lap belt setups.
Key Features
- Chassis Reinforcement Brace: High-tensile chromoly steel tubes connect floor and seat rails to reduce flex and improve overall vehicle rigidity
- Seat Rail Plus Floor Set: Complete right and left side braces bolt directly to factory locations for driver and passenger reinforcement
- Safety Harness Hooks: Four hooks per side provide dedicated lap belt anchor points for track or rally applications
- Center Position Design: Targets critical under-seat area prone to twisting under load for precise handling gains
- Black Electroplated Finish: Corrosion-resistant coating ensures long-term durability in harsh conditions
Product Notes
- Not certified by SFI, FIA or JAF organizations
- MPN 6A1 492 SP compatible with VA chassis EJ25T engine models
- Ships in protective packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Bolts to existing OEM mounting points with no drilling or modifications required
- Includes all necessary hardware for direct fitment
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2021 | Subaru | WRX STI | 4-Dr. Sedan (VA chassis) |
| 2015-2021 | Subaru | WRX | 4-Dr. Sedan (VA chassis) |
Why Choose Cusco?
- Developed through motorsport testing in Japan for real-world performance
- CAD-designed for perfect fit and maximum strength-to-weight ratio
- Used by professional drifters and rally teams for proven chassis control
Frequently Asked Questions
-
Q: Does this fit 2015-2021 Subaru WRX STI sedan?
A: Yes, designed specifically for VA chassis 4-door sedan models with EJ25T engine including base STI trims -
Q: What material is used in construction?
A: Precision-welded 4130 chromoly steel pipes with black electroplated finish for strength and rust protection -
Q: Is installation straightforward?
A: Bolts to factory holes using provided hardware. 1-2 hours with basic tools but pro install advised for alignment
Shipping & Handling
- Method: Ground shipping via UPS or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Sturdy cardboard box measuring 47 x 8 x 6 inches
- Weight: 10.5 lbs
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