Cobb Stainless Steel 3-Inch Cat-Back Exhaust — 2022-2026 Subaru WRX
The Cobb Stainless Steel 3-Inch Cat-Back Exhaust for the 2022-2026 Subaru WRX is a mandrel-bent 304 stainless steel exhaust from the catalytic converter outlet to the rear exit. The 3-inch diameter throughout provides improved exhaust flow capacity for the FA24WGT — meaningfully larger than the factory system — enabling lower backpressure that complements the Accessport calibration at Stage 2 and above.
DETAILS
- Platform: 2022-2026 Subaru WRX FA24WGT MT/CVT
- Material: 304 stainless steel — mandrel bent throughout
- Diameter: 3-inch throughout — improved flow capacity over factory system
- Reduced backpressure — improved turbocharger spool and exhaust efficiency
- Sound: purposeful improvement over stock, tuned to minimize highway cruise drone
- All hangers, gaskets, and installation hardware included
- NOTE: Ships via UPS/FedEx — signature required at delivery
3-Inch Diameter and Stainless Construction for the FA24WGT
Cobb’s stainless steel cat-back exhaust uses mandrel-bent 304 stainless steel tubing throughout — mandrel bending maintains consistent tube diameter through bends rather than collapsing the inner radius, which eliminates the flow restriction that crush-bent exhaust tubing creates. The smooth, consistent bore allows spent gases to exit with minimal turbulence and backpressure. The reduction in backpressure has a direct effect on turbocharger performance: lower exhaust backpressure means the turbocharger can spool more freely, reaching boost targets faster and maintaining them with less effort from the engine. The stainless steel construction resists the corrosion and scaling that degrades factory and lower-quality aftermarket exhaust systems over time.
Sound Character, Stage 2 Integration, and Complete Hardware
The cat-back connects at the catalytic converter outlet and runs through the mid-pipe and resonator to the rear muffler and exhaust tips. Cobb designs the entire system as a matched assembly — the mid-pipe diameter, resonator volume, muffler packing, and tip size are all specified together to achieve a particular sound character and backpressure target. The result is a system that sounds intentional rather than arbitrary: louder and more purposeful than stock without the drone that comes from an inadequately designed resonator. All hangers, gaskets, and hardware for the complete installation are included.
What’s in the Box
- Cobb 3-inch stainless cat-back exhaust system
- All hangers, gaskets, clamps, and hardware
Why Choose Cobb Tuning
Cobb Tuning has been developing performance software and hardware for turbocharged enthusiast vehicles since 1999. Founded in Austin, Texas, Cobb built its reputation on the Accessport and expanded into a full catalog of hardware engineered to complement it. Every OTS map is developed in-house on real vehicles, and every hardware product is validated as part of a complete system — not sourced and sold in isolation. That integrated approach is why Cobb produces consistent, reliable results across the builds we see every day.
The RallySport Take
The Cobb 3-inch stainless cat-back for the VB WRX is the correct exhaust system for Stage 2 and above builds where exhaust flow capacity matters. The FA24WGT produces meaningfully more exhaust gas volume at higher boost targets than at stock levels — the 3-inch bore maintains lower backpressure across that increased flow range. For owners who have already addressed calibration, intake, and intercooler, the cat-back completes the full-system flow improvement that the Accessport Stage 2 maps are designed to work with. The stainless construction ensures this is the last cat-back the VB WRX will ever need.
Fitment
| Year | Make | Model | Notes |
|---|---|---|---|
| 2022-2026 | Subaru | WRX | FA24WGT MT/CVT |
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