Gibson Exhaust 619903 Cat-Back Single Exhaust System Stainless Steel

The Gibson 619903 Cat-Back Single Exhaust System is a fully engineered, bolt-on performance exhaust built for trucks and SUVs that demand more from every drive. Constructed from T304 polished stainless steel with 3-inch mandrel-bent tubing, this single side-exit system delivers a deep, aggressive exhaust note while producing measurable gains in horsepower and torque across the low-end power band.

Performance You Can Feel:

• Dyno-tested to maximize torque and horsepower between 1,800–3,000 RPM — the ideal range for towing, hill climbing, and passing
• Average gains of 10–15 horsepower and 15–20 lb-ft of torque on stock vehicles
• Engineered for improved acceleration, towing capacity, and passing power
• Minimal interior drone — quieter in-cab sound compared to competing performance exhaust systems

Muffler Specifications:

• Design: Baffled & Chambered — no internal packing for unrestricted flow
• Shape: 8-inch Round
• Inlet: 3.00-inch offset
• Outlet: 3.00-inch offset
• Length: 24 inches

Exhaust Tip Specifications:

• Style: 3.5-inch Round Slash-Cut, polished T304 stainless steel
• Attachment: Clamp-on design
• Inlet: 3-inch | Outlet: 3.5-inch | Length: 12 inches

Installation:

• True bolt-on fitment using factory-style hangers and mounting points
• No welding required — no drilling, no custom fabrication
• Exits behind the rear tire for a clean, factory-integrated look
• Includes all necessary hardware and clamps

Backed by Gibson's Lifetime Limited Warranty, the 619903 is a proven performer for drivers looking to unlock their vehicle's full exhaust potential without sacrificing daily driveability.