Gibson Performance Exhaust 65666 Dual Sport Cat-Back Exhaust System Stainless Steel

The Gibson Performance Exhaust 65666 Dual Sport Cat-Back Exhaust System is a bolt-on performance upgrade engineered to deliver measurable power gains and an aggressive exhaust note without sacrificing daily drivability. Built from 409 stainless steel mandrel-bent tubing, this system maximizes exhaust flow and long-term durability, while dual 4-inch polished T-304 stainless steel rolled slash-cut tips provide a clean, purposeful look.

Designed with a dual exit behind the rear tire, this cat-back system keeps the exhaust path clear of tow hitches and trailer connections — an ideal configuration for trucks that work as hard as they look. The system flows through a single-inlet, dual-outlet configuration with 3-inch intermediate piping feeding into 2.25-inch tailpipes.

Key Features:

• Dyno-proven performance: Engineered for peak low-end torque and horsepower in the 1,800–3,000 RPM range, with gains of 10–15 horsepower and 15–20 lb-ft of torque
• SuperFlow Muffler: Baffled and chambered design with no internal packing — produces an aggressive, deep exhaust tone while minimizing interior cabin drone
• 409 stainless steel construction: Mandrel-bent tubing ensures consistent exhaust flow and resists corrosion for lasting durability
• Dual polished tips: Two 4-inch round, slant-cut, rolled-edge tips crafted from 304 stainless steel — sold as part of the complete kit
• Bolt-on installation: Includes all hardware, clamps, and factory-style hangers — no welding required
• Tow-friendly exit location: Exits behind the rear tire to prevent interference with trailer hitches and tow equipment
• Made in the USA and backed by a Lifetime Limited Warranty

The Gibson 65666 is sold as a complete cat-back kit. This is a stainless steel version; an aluminized steel variant is also available under part number 5666. UPC: 677418027044.