Porsche 911 GT3 Performance Exhaust - Rear - aFe - MACHForce XP 304 Stainless Secondary Muffler Delete - `14-`19
Porsche 911 GT3 Performance Exhaust - Rear - aFe - MACHForce XP 304 Stainless Secondary Muffler Delete - `14-`19

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Porsche 911 GT3 Performance Exhaust - Rear - aFe - MACHForce XP 304 Stainless Secondary Muffler Delete - `14-`19. This rear muffler delete replaces the factory secondary muffler on 2014–2019 911 GT3 models (3.8L/4.0L) to open the exhaust path and sharpen the character of the factory system.
The MACHForce XP secondary muffler delete is constructed from mandrel-bent 304 stainless steel and 100% TIG-welded for durability and race-proven strength. Its design includes dual, tuned Helmholtz resonators integrated to improve tone and reduce drone while retaining the side mufflers and factory exhaust valves. Engineered with computer-aided design for high-tolerance factory fitment, this unit bolts on directly with no cutting or welding required, making installation straightforward for enthusiasts looking to modify their GT3’s rear exhaust without replacing the entire system.
Features
- Mandrel-bent 304 stainless steel tubing for corrosion resistance and durability
- 100% TIG-welded construction for strong, long-lasting joints
- Dual tuned Helmholtz resonators to improve tone and minimize drone
- Direct bolt-on replacement of factory secondary muffler — no cutting or welding
- Retains side mufflers and factory exhaust valve function
- CAD-designed for precise, high-tolerance factory fitment
If you have questions or want help confirming fitment, call us directly — we’re happy to walk through details. We have two locations in Austin, Texas and Los Angeles California area at which we offer installation and customization services. Call: 512-982-9393 (TX) or 562-981-6800 (CA). If you’re considering multiple items, contact us for possible shipping discounts. We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov







