Gibson 65654 Cat-Back Dual Split Exhaust System Stainless Steel

The Gibson 65654 Cat-Back Dual Split Exhaust System delivers an aggressive throaty exhaust tone and a bold dual-tip look, all while unlocking real performance gains. Built with 2.25-inch mandrel-bent stainless steel tubing, this system reduces backpressure and improves exhaust scavenging for average horsepower gains of 15–20 hp, with peak power improvements in the 2,000–4,000 RPM range.

At the heart of this system is Gibson's Superflow Muffler — a baffled and chambered design with no internal packing. This construction delivers a powerful, deep exhaust note while keeping interior drone to a minimum. The system exits straight out the back and is compatible with most factory bumpers, roll pans, and trailer hitches. A ball-seat flange connection and slip-fit pipe joints further reduce turbulence at joining points.

Muffler Specifications:

• Design: Baffled & Chambered, No Internal Packing
• Sound: Deep Aggressive Tone, Minimal Interior Drone
• Body: 4 x 9 x 18 in. Oval
• Inlet: 3.00 in. Center Inlet
• Outlet: 2.25 in. Dual Outlet

Exhaust Tip Specifications:

• Description: 4 in. Polished T304 Stainless Rolled Slash-Cut Tips — Clamp-On
• Inlet: 2.25 in.
• Outlet: 4.0 in.
• Length: 12 in.

System Specifications:

• Tubing: 2.25 in. Mandrel-Bent Stainless Steel
• Connection: Ball Flange
• Exit Position: Straight Out the Back
• Compatibility: Works with most bumpers, roll pans, and trailer hitches
• 50-State Legal / California Emissions Compliant
• Made in the USA

Installation is completely bolt-on — no welding required. All necessary hardware and factory-style hangers are included for a straightforward, hassle-free fit. Backed by Gibson's Lifetime Limited Warranty.