Gibson 315531 Cat-Back Exhaust for 00-06 Chevy Suburban 2500/Avalanche

Vehicle Fitment

• 2000-2006 Chevy Suburban 2500 (6.0L V8, 8.1L V8, RWD/4WD)
• 2000-2006 GMC Yukon XL 2500 (6.0L V8, 8.1L V8, RWD/4WD)
• 2002-2006 Chevy Avalanche 2500 (8.1L V8, 4WD)

Features

• Cat-back single exhaust system engineered for heavy-duty GM 2500 SUV and Avalanche applications
• Mandrel-bent tubing helps improve exhaust flow and reduce backpressure
• Gibson states typical gains of 10-15 horsepower and 15-20 lb-ft of torque
• Cab-Quiet muffler design is intended to stay quieter inside the cabin than louder performance systems
• Single passenger-side exit routes behind the rear tire for a clean OE-style layout
• Bolt-on installation with no welding required per Gibson listing
• Aluminized steel construction for durability and value
• Designed to support towing, hill-climbing, and passing power improvements
• Includes polished stainless steel tip for a finished appearance
• Backed by Gibson's limited lifetime warranty

Specifications

• Part Number: 315531
• Brand: Gibson
• Product Type: Cat-back exhaust system
• System Style: Single exhaust
• Material: Aluminized steel / steel system construction
• Tubing Diameter: 3.00 in.
• Intermediate Pipe Diameter: 2.50 in.
• Muffler Configuration: Dual inlet / single outlet
• Muffler Body: 8.00 in. round, 24.00 in. length
• Outlet / Exit Location: Passenger side, behind rear tire
• Tip Size: 3.50 in. polished slash-cut tip
• Catalytic Converters Included: No

Included Components

• 1x Gibson 315531 cat-back exhaust system
• 1x Muffler assembly
• 1x Intermediate pipe
• 1x Tailpipe
• 1x 3.5 in. polished exhaust tip
• 1x Hardware and clamp kit

Product Description

The Gibson 315531 is an aluminized cat-back single exhaust system built for 2000-2006 Chevy Suburban 2500, 2000-2006 GMC Yukon XL 2500, and 2002-2006 Chevy Avalanche 2500 applications equipped with the specified 6.0L or 8.1L V8 engines. Gibson positions this system as a towing- and torque-focused upgrade, using mandrel-bent tubing and a chambered Cab-Quiet style muffler to improve flow while keeping interior sound levels more controlled than more aggressive street exhaust systems.

This system uses a passenger-side exit behind the rear tire and is intended as a bolt-on cat-back replacement. Gibson's listing covers Suburban 2500 and Yukon XL 2500 models with 6.0L and 8.1L engines, plus Avalanche 2500 with the 8.1L V8. This is not a lift or lowering product, so no front/rear height change applies. Fitment is confirmed through 2006 on Gibson's official listing and cross-validated with Summit Racing. 2007-2025 coverage is unconfirmed at time of listing.