Gibson Exhaust 66538 Cat-Back Dual Sport Exhaust System Stainless Steel

The Gibson 66538 Dual Sport Cat-Back Exhaust System is engineered for truck and SUV owners who demand aggressive style and real performance gains without sacrificing towing convenience. The system exits behind the rear tire, keeping the exhaust path clear of any tow trailer while giving your truck a distinctive, purposeful look on the street or trail.

Key Features:

• Mandrel-Bent Stainless Steel Tubing: 2.50 in. 409 stainless mandrel-bent tubing ensures consistent exhaust flow throughout the entire system with zero restrictions or kinks
• Superflow™ Baffled & Chambered Muffler: Baffled and chambered muffler design with no internal packing delivers an aggressive, deep exhaust tone while keeping interior drone to a minimum — approximately 5–8 dB louder than stock
• Polished T304 Stainless Slash-Cut Tips: 3.50 in. round slash-cut clamp-on tips with a polished T304 stainless finish add a clean, premium look; tip inlet 2.50 in., outlet 3.50 in., length 12 in.
• Dyno-Tested Performance: Engineered and dyno-tuned to deliver more power in the 2,000–4,000 RPM range; average gains of 10–15 horsepower and 15–20 lb-ft of torque
• Rear-Tire Exit: Dual outlets exit cleanly behind the rear tires, preserving towing clearance and adding aggressive curb appeal
• Bolt-On Installation: Includes all necessary hardware and factory-style hangers for a no-weld, hassle-free bolt-on installation with professional results
• Made in the USA: Proudly manufactured in the United States and backed by a Lifetime Limited Warranty against defects in materials and workmanship

Muffler Specifications: 7 in. round body; 3 in. center inlet; 2.50 in. dual outlet; 24 in. length.

Tip Specifications: 3.50 in. polished T304 stainless, round slash-cut, clamp-on; inlet 2.50 in., outlet 3.50 in., length 12 in.

Whether you're looking to unleash more power, improve fuel efficiency, or turn heads with a deep, authoritative exhaust note, the Gibson 66538 Dual Sport Cat-Back system delivers on every front — with no welding, no guesswork, and no compromise.