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SKU: B515160 | UPC: 731946517719
Cobb 11-21 Subaru WRX/STI GV/VA Sedan Catback Exhaust
The COBB Catback Exhaust replaces the entire exhaust system from the catalytic converter back on 2011-2021 Subaru WRX and STI Sedan models (GV/VA chassis). Mandrel-bent 3-inch T304L stainless steel tubing improves exhaust flow for gains in horsepower, torque, and throttle response. Paired with high-flow mufflers and dual 4-inch tips, it produces a deep turbocharged growl without excessive drone.
Key Features
- T304L Stainless Steel Construction: Corrosion-resistant material built for daily driving and track durability with lifetime structural integrity.
- Mandrel-Bent 3" Piping: Smooth, continuous bends from cat to tips ensure unrestricted flow and dyno-proven power increases up to 12 whp.
- Resonated Mufflers: Dual high-flow units tame cabin drone on highways while amplifying turbo spool and exhaust note under acceleration.
- 4" Polished Dual Tips: Angled slash-cut design adds visual aggression matching the WRX/STI sedan stance.
- Weight Reduction: 42.5 lbs system weighs 12.5 lbs less than stock for quicker acceleration and sharper handling.
Product Notes
- Direct bolt-on design retains stock catalytic converter compatibility.
- Clean with mild soap avoid abrasive cleaners to preserve finish.
Installation Notes
- Professional installation recommended.
- Bolt-on fit using stock hangers no welding or cutting needed, 2-3 hours labor.
- Torque all clamps to 40-45 ft-lbs includes new gaskets and hardware.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2014 | Subaru | Impreza WRX | Sedan |
| 2015-2021 | Subaru | WRX | Sedan |
| 2015-2021 | Subaru | WRX STI | Sedan |
Why Choose COBB?
- Subaru specialists with 25+ years developing WRX/STI bolt-ons.
- In-house dyno testing verifies real-world power and sound gains.
- Precision engineering for seamless fit with Accessport tuning.
Frequently Asked Questions
-
Q: Will this exhaust fit my 2018 WRX STI Sedan?
A: Yes, direct bolt-on for all 2015-2021 VA-chassis WRX STI Sedans using factory midpipe and cat. -
Q: What material and pipe size are used?
A: Full T304L stainless steel with mandrel-bent 3-inch diameter piping throughout for flow and strength. -
Q: What warranty coverage applies?
A: Limited lifetime warranty against manufacturing defects register product on COBB site for full protection.
Shipping & Handling
- Method: UPS Ground or Freight
- Availability: In stock - ships same or next business day
- Packaging: Single box dimensions 49" x 15" x 15"
- Weight: 50 lbs shipping weight
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