Stainless Works 2011-14 Mustang GT/2011-2012 Shelby GT500 3in Catback Retro Chambered Mufflers (part # M12CB3), built from 304 stainless steel by Stainless Works in Streetsboro, Ohio.
304 Stainless Steel
TIG Welded
2011–14 Mustang GT / 2011–12 GT500
Lifetime Warranty
Made in USA
Overview
Improve the sound and performance of your 2011–14 Mustang GT or 2011–12 GT500 with a premium retro chambered catback exhaust from Stainless Works. This system delivers that deep, aggressive muscle car sound you desire.
Designed with smooth mandrel-bent tubing and chambered round mufflers, this catback optimizes exhaust flow while providing a bold tone that sets your Mustang apart.
This system is built from corrosion-resistant 304 stainless steel and TIG welded in Streetsboro, Ohio — engineered for long-term durability and performance.
Why Stainless Works
- American-made from raw material to finished product
- TIG welded by skilled craftsmen for strength and beauty
- Lifetime warranty on material and craftsmanship
- Direct bolt-on fit for 2011–14 Mustang GT / 2011–12 GT500
- Pairs perfectly with Stainless Works long tube headers for a full system upgrade
Key Features
Retro Chambered Design
Delivers deep, aggressive muscle car tone with a classic rumble.
304 Stainless Steel
Corrosion-resistant for a lifetime of reliable performance.
Mandrel Bent Tubing
Smooth airflow with zero restriction bends.
TIG Welded Construction
Precision welds for maximum durability.
Complete Hardware Kit
Includes mufflers, tailpipes, slash cut tips, and all necessary clamps.
Excellent Fitment
Direct bolt-on design for an easy, hassle-free installation.
Specifications
| Vehicle Fitment |
2011–14 Mustang GT / 2011–12 GT500 |
| Material |
304 Stainless Steel |
| Welding |
TIG Welded |
| Muffler Type |
Chambered Round |
| Exhaust Tips |
Slash Cut |
| Connection |
Factory Connection Point - Fits Stainless Works and most Aftermarket Exhausts |
| Lead Time |
Built To Order — 4 Weeks |
| Warranty |
Lifetime |
| Origin |
Made in USA — Streetsboro, Ohio |
⇩ Download Installation Instructions (PDF)
See It In Action
Sound Comparison and Features — 2011–14 Mustang GT / 2011–12 GT500 Catback Exhaust
What's In The Box
- Chambered Round Mufflers x2
- Front Tailpipes x2
- Rear Tailpipes x2
- Slash Cut Tips x2
- Exhaust Clamps x8
- Installation Instructions
Frequently Asked Questions
Will this catback fit my 2011–14 Mustang GT or 2011–12 GT500?
Yes. This catback exhaust is designed specifically for the 2011–2014 Mustang GT and 2011–2012 GT500. It is a direct bolt-on system that requires no cutting, welding, or modification.
What kind of sound does this retro chambered exhaust produce?
This system delivers a deep, aggressive muscle car tone with a classic chambered rumble. It is noticeably louder and more authoritative than stock, yet refined enough for daily driving with minimal drone at cruising speeds.
Can I pair this catback with Stainless Works long tube headers?
Absolutely. This catback is designed to bolt directly to your factory catalytic converters, and it pairs seamlessly with Stainless Works long tube headers for a complete, high-performance exhaust system that maximizes both sound and power.
What warranty is included?
Stainless Works provides a lifetime warranty on material and craftsmanship — covering the full life of the product, not just a limited term.
Customer Reviews
★★★★★
Catback Exhaust
Verified Buyer — Mustang Owner | March 15, 2024
Perfect fit and sounds incredible. The chambered mufflers give it that classic muscle car growl without being too loud inside the cabin.
Questions? Call us at | Mon–Fri 7:30am–4:30pm EST
Built To Order in 4 Weeks — Free Shipping on Orders $50+
This Listing
- Brand: Stainless Works
- Part number: M12CB3
- Product type: Cat-back exhaust
- Fitment: 2011-14 Mustang GT / 2011-2012 Shelby GT500
- Configuration: Stock Manifolds (Factory Connect)
- Shipping weight: 56 lb
California Prop 65 warning applies to this product.
Fitment note: Stainless Works systems are application-specific (year, cab/bed, transmission and factory exhaust). Send us your VIN before ordering and we will confirm fitment: 954-507-6261 or sales@americanmuscleperformance.net.
