Gibson 66530 Cat-Back Dual Extreme Exhaust System, Stainless Steel

The Gibson 66530 Cat-Back Dual Extreme Exhaust System delivers a bold dual-exit configuration that exits behind the rear tires at an aggressive angle, combining head-turning street presence with real, dyno-tuned performance gains. Built with 2.5-inch 409 stainless mandrel-bent tubing, this bolt-on cat-back system is engineered to reduce backpressure and unlock an average of 15–20 horsepower over stock. No cutting, no welding — just a clean, straightforward installation backed by Gibson's Lifetime Limited Warranty.

Muffler Specifications:

• Design: Baffled and chambered — no internal packing
• Sound profile: Aggressive performance tone with minimal interior drone
• Shape: 7-inch round body
• Inlet: 3-inch center inlet
• Outlet: 2.5-inch dual outlet
• Length: 24 inches

Tip Specifications:

• Material: Polished T304 stainless steel
• Style: Round slash-cut, clamp-on
• Inlet diameter: 2.50 inches
• Outlet diameter: 3.50 inches
• Length: 12 inches

System Features:

• 2.5-inch 409 stainless mandrel-bent tubing throughout
• Dual exit behind rear tires for aggressive stance
• Bolt-on installation — no welding required
• Average performance gain of 15–20 horsepower
• Lifetime Limited Warranty
• Made in the USA

The Gibson 66530 is a complete cat-back exhaust kit that includes the muffler, stainless tubing, polished slash-cut tips, and all required hardware for installation. Ideal for truck owners seeking a dual exhaust upgrade that delivers both aggressive sound and measurable power improvements right out of the box.