Description
Unleash the full potential of your Silverado or Sierra 1500 with the aFe Apollo GT Series 3-Inch 409 Stainless Steel Cat-Back Exhaust System. Designed for performance, style, and durability, this dual rear-exit system delivers up to +14 horsepower and +17 lb-ft of torque while providing an aggressive exhaust note that enhances every drive.
Constructed from 3-inch mandrel-bent 409 stainless steel tubing and fully MIG-welded for maximum strength and corrosion resistance, the Apollo GT Series ensures long-lasting performance. Smooth transition bends combined with a free-flowing single-in dual-out stainless steel muffler reduce turbulence and increase exhaust efficiency, improving both horsepower and throttle response. Dyno testing on a 2014 Chevrolet Silverado 5.3L V8 verified gains of up to +14 HP and +17 lb-ft torque.
Finishing off this dual rear-exit system are dual 4.5-inch black stainless steel side-exit tips with laser-cut aFe POWER badges, providing a bold, aggressive style. The system includes factory-style bayonet hangers and high-quality band clamps to ensure a secure, leak-free fit, and all necessary hardware is included for a hassle-free, bolt-on installation. An extension tube is provided for regular cab/long bed configurations, while a bolt-on hanger supports the driver-side tailpipe for stability.
The Apollo GT Series combines performance, sound, and durability in a sleek, OE-quality package, and like all aFe exhaust systems, it is engineered and manufactured in Corona, California.
Key Features
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Gains up to +14 HP and +17 lb-ft torque (2014 Silverado 5.3L tested)
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3" mandrel-bent 409 stainless steel tubing, 100% MIG-welded
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Free-flowing single-in dual-out stainless steel muffler for smooth exhaust flow
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Aggressive dual rear side-exit sound
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Dual 4.5" black stainless steel tips with laser-cut aFe POWER badges
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OE-style bayonet hangers and high-quality band clamps for secure fit
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Bolt-on installation; extension tube included for long-bed models
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Leak-free 360° band clamp seal
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Durable, race-proven construction
Fitment
Cab & Bed Configurations:
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Regular Cab / Short Bed – 6.6 ft (119" wheelbase)
Vehicle Applications:
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2009–2018 Chevrolet Silverado 1500 – 4.3L V6 Gas
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2009–2018 Chevrolet Silverado 1500 – 4.8L V8 Gas
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2009–2018 Chevrolet Silverado 1500 – 5.3L V8 Gas
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2009–2018 GMC Sierra 1500 – 4.8L V8 Gas
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2009–2018 GMC Sierra 1500 – 5.3L V8 Gas
Emissions Disclaimer
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Cat-back exhaust system
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CARB EO not required
