GMC Truck Performance Exhaust - Rear - aFe - Apollo GT Series Cat-Back, Dual Rear Exit - Black - `09-`18
GMC Truck Performance Exhaust - Rear - aFe - Apollo GT Series Cat-Back, Dual Rear Exit - Black - `09-`18

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GMC Truck Performance Exhaust - Rear - aFe - Apollo GT Series Cat-Back, Dual Rear Exit - Black - `09-`18 is a direct-fit cat-back system designed for GM trucks (2009–2018 V6 4.3L and V8 4.8/5.3L). It delivers a fuller, aggressive exhaust note and is built for durability and straightforward installation.
This Apollo GT Series system uses 3" mandrel-bent 409 stainless steel tubing and a high-flow 409 stainless steel muffler to free up flow while maintaining a controlled tone. Dyno testing on aFe’s in-house equipment showed gains of up to +14 HP and +17 lb-ft of torque. The system is 100% MIG-welded, engineered with CAD for factory-style fitment, and uses factory-style hangers for a bolt-on installation with no cutting or modifications required. Dual 4-1/2" black 304 stainless clamp-on tips with a riveted aFe POWER logo finish the look.
Features
- Up to +14 HP and +17 lb-ft torque (in-house dyno)
- 3" mandrel-bent 409 stainless steel tubing
- High-flow 409 stainless steel muffler for aggressive sound
- Dual 4-1/2" black 304 stainless clamp-on tips with riveted logo
- 100% MIG-welded construction
- Factory-style hangers for direct bolt-on fit
- CAD-designed for high-tolerance factory fitment
If you have questions or want help confirming fitment, call us directly at 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations offering installation and customization services in Austin, Texas and the Los Angeles, California area. If you are considering purchasing multiple items, contact us for potential shipping discounts. We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov









