Gibson Exhaust 66527 Cat-Back Super Truck Exhaust System Stainless Steel Dual

The Gibson Performance Exhaust 66527 Super Truck Cat-Back Exhaust System is Gibson's most aggressive cat-back offering, delivering a deep, powerful race truck rumble with dual tailpipes that exit in front of the rear tires. Built entirely from T-304 polished stainless steel, this bolt-on system is engineered for truck enthusiasts who demand serious performance sound and real power gains without cutting or welding.

At the heart of this system is Gibson's patented Superflow™ baffled and chambered muffler — fully welded with no internal packing or screening to blow out over time. Paired with mandrel-bent tubing and slip-fit pipe connections that reduce backpressure at every joint, the system maximizes exhaust flow and minimizes interior drone for a clean, aggressive note inside the cab.

Key Features:

• Patented Superflow™ T-304 stainless muffler — baffled and chambered design, no packing, minimal interior drone
• Muffler dimensions: 7 in. round body; 3.00 in. center inlet; 2.50 in. dual outlets; 19 in. length
• Mandrel-bent T-304 stainless steel tubing for consistent, unrestricted exhaust flow
• Slip-fit pipe connections reduce backpressure at joining points
• Dual tailpipes exit in front of the rear tires
• Includes 3.5 in. polished T-304 stainless round straight-cut clamp-on tips (2.50 in. inlet / 3.5 in. outlet / 12 in. length)
• Dyno-tested gains averaging 10–15 horsepower and 15–20 lb-ft of torque
• Hassle-free bolt-on installation — no cutting or welding required
• Backed by a Lifetime Limited Warranty

Note: Noise level may exceed the 95-decibel standard. Not recommended for heavy-duty towing.