Cobb Stainless Steel Cat-Back Exhaust — 2010-2013 Mazdaspeed3
The Cobb Stainless Steel Cat-Back Exhaust for the 2010-2013 Mazdaspeed3 is a mandrel-bent 304 stainless steel system for the second-generation MZR DISI 2.3T platform. The Gen 2 Mazdaspeed3 uses updated ECU hardware and slightly different factory calibration from Gen 1 — this cat-back is sized and tuned specifically for the Gen 2 chassis.
DETAILS
- Platform: 2010-2013 Mazda Mazdaspeed3 MZR DISI 2.3T MT — Gen 2
- Material: 304 stainless steel — mandrel bent throughout
- Gen 2 specific — correct hanger positions and routing for 2010-2013
- Improved exhaust flow — reduced backpressure for Gen 2 MZR DISI turbocharger
- Sound: improved character over stock for MZR DISI inline-four
- All hangers, gaskets, and hardware included
- NOTE: Ships via UPS/FedEx — signature required at delivery
Gen 2 MZR DISI Exhaust: Specific Fitment for 2010-2013
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.
Gen 2 Chassis Routing, Sound Character, and Stainless Construction
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 stainless cat-back — Gen 2 Mazdaspeed3
- 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 stainless cat-back for the 2010-2013 Mazdaspeed3 is the exhaust upgrade for Gen 2 MZR DISI builds. The Gen 2 is not a carry-over of the Gen 1 hardware — different ECU, slightly different engine calibration, and different chassis routing mean this is a specifically engineered Gen 2 system. For Mazdaspeed3 Gen 2 owners who have the Accessport calibration and intake already sorted, the cat-back is the final piece of the full-system performance package.
Fitment
| Year | Make | Model | Notes |
|---|---|---|---|
| 2010-2013 | Mazda | Mazdaspeed3 | MZR DISI 2.3T MT — Gen 2 |
Reviews
There are no reviews yet.