Gibson 67500 Cat-Back Dual Extreme Exhaust System Stainless Steel

The Gibson 67500 Dual Extreme Cat-Back Exhaust System is a fully bolt-on performance upgrade engineered for maximum power, aggressive sound, and bold street presence. Constructed from 409 stainless steel mandrel-bent 2.5-inch tubing, this dual exhaust system exits behind the rear tire at an aggressive angle, delivering a standout look alongside serious performance gains.

At the heart of the system is Gibson's Superflow CTF Muffler — a baffled and chambered design with no internal packing. This architecture produces a deep, aggressive exhaust note while keeping interior cabin drone to a minimum. Dyno-proven performance gains are targeted in the peak low-end torque range (1,800–3,000 RPM), delivering 10–15 horsepower and 15–20 lb-ft of torque over stock.

Muffler Specifications:

• Design: Baffled & Chambered, No Internal Packing
• Body: 8 in. Round
• Inlet: 2.50 in. Dual
• Outlet: 3 in. Offset
• Length: 24 in.

Tip Specifications:

• Style: 3.5 in. Polished T304 Stainless Steel, Round Slash-Cut, Clamp-On
• Inlet: 2.50 in.
• Outlet: 3.50 in.
• Length: 12 in.

Key Features:

• 2.50 in. 409 stainless steel mandrel-bent tubing for unrestricted exhaust flow
• Polished T304 stainless steel slash-cut tip for a premium finish
• Superflow CTF baffled and chambered muffler — no packing to blow out
• Includes all hardware and factory-style hangers for a clean bolt-on installation
• No welding required — installs with standard hand tools
• Street legal in all 50 states
• Proudly made in the USA
• Backed by a Lifetime Limited Warranty

The Gibson 67500 includes all mounting hardware and factory-style hangers, making installation straightforward with no cutting or welding required. Note: exhaust sound levels may increase under towing conditions.