Gibson 20-22 Silverado/GMC Sierra 2500 HD 6.6L Crew Cab (Long Bed) Cat-Back Dual Split Exhaust

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SKU: GIB65713
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For the enthusiast who wants an awesome look and Mild ...Read More

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Sale price$827.99 Regular price$1,761.58
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit
For the enthusiast who wants an awesome look and Mild sound this Dual Split Cat back exhaust is for you. Gibson Exhaust Systems decrease backpressure and produce more torque and increased horsepower while maintaining similar factory interior sound levels. Typical gains average of 15-20 horsepower. Stainless dual Tip exit straight out the back. Works with most bumpers, roll pans and trailer hitches. Exhaust sound is louder under towing conditions. Hassle Free bolt- on installation. No welding required. Backed by a Lifetime Limited Warranty.
Installation Instructions


This Part Fits:

Year Make Model Submodel
2023-2024 Chevrolet Silverado 2500 HD Custom
2023-2024 Chevrolet Silverado 2500 HD High Country
2023-2024 Chevrolet Silverado 2500 HD LT
2023-2024 Chevrolet Silverado 2500 HD LTZ
2023-2024 Chevrolet Silverado 2500 HD WT
2023-2024 Chevrolet Silverado 3500 HD High Country
2023-2024 Chevrolet Silverado 3500 HD LT
2023-2024 Chevrolet Silverado 3500 HD LTZ
2023-2024 Chevrolet Silverado 3500 HD WT
2023-2024 GMC Sierra 2500 HD AT4
2024 GMC Sierra 2500 HD AT4X
2022-2024 GMC Sierra 2500 HD Denali
2023-2024 GMC Sierra 2500 HD Pro
2023-2024 GMC Sierra 2500 HD SLE
2023-2024 GMC Sierra 2500 HD SLT
2023-2024 GMC Sierra 3500 HD AT4
2023-2024 GMC Sierra 3500 HD Denali
2023-2024 GMC Sierra 3500 HD Pro
2023-2024 GMC Sierra 3500 HD SLE
2023-2024 GMC Sierra 3500 HD SLT

Product Details

Product Description
Part Numbers
Sizing & Fit
For the enthusiast who wants an awesome look and Mild sound this Dual Split Cat back exhaust is for you. Gibson Exhaust Systems decrease backpressure and produce more torque and increased horsepower while maintaining similar factory interior sound levels. Typical gains average of 15-20 horsepower. Stainless dual Tip exit straight out the back. Works with most bumpers, roll pans and trailer hitches. Exhaust sound is louder under towing conditions. Hassle Free bolt- on installation. No welding required. Backed by a Lifetime Limited Warranty.
Installation Instructions


This Part Fits:

Year Make Model Submodel
2023-2024 Chevrolet Silverado 2500 HD Custom
2023-2024 Chevrolet Silverado 2500 HD High Country
2023-2024 Chevrolet Silverado 2500 HD LT
2023-2024 Chevrolet Silverado 2500 HD LTZ
2023-2024 Chevrolet Silverado 2500 HD WT
2023-2024 Chevrolet Silverado 3500 HD High Country
2023-2024 Chevrolet Silverado 3500 HD LT
2023-2024 Chevrolet Silverado 3500 HD LTZ
2023-2024 Chevrolet Silverado 3500 HD WT
2023-2024 GMC Sierra 2500 HD AT4
2024 GMC Sierra 2500 HD AT4X
2022-2024 GMC Sierra 2500 HD Denali
2023-2024 GMC Sierra 2500 HD Pro
2023-2024 GMC Sierra 2500 HD SLE
2023-2024 GMC Sierra 2500 HD SLT
2023-2024 GMC Sierra 3500 HD AT4
2023-2024 GMC Sierra 3500 HD Denali
2023-2024 GMC Sierra 3500 HD Pro
2023-2024 GMC Sierra 3500 HD SLE
2023-2024 GMC Sierra 3500 HD SLT

Product Details

Product Description
For the enthusiast who wants an awesome look and Mild sound this Dual Split Cat back exhaust is for you. Gibson Exhaust Systems decrease backpressure and produce more torque and increased horsepower while maintaining similar factory interior sound levels. Typical gains average of 15-20 horsepower. Stainless dual Tip exit straight out the back. Works with most bumpers, roll pans and trailer hitches. Exhaust sound is louder under towing conditions. Hassle Free bolt- on installation. No welding required. Backed by a Lifetime Limited Warranty.
Installation Instructions


This Part Fits:

Year Make Model Submodel
2023-2024 Chevrolet Silverado 2500 HD Custom
2023-2024 Chevrolet Silverado 2500 HD High Country
2023-2024 Chevrolet Silverado 2500 HD LT
2023-2024 Chevrolet Silverado 2500 HD LTZ
2023-2024 Chevrolet Silverado 2500 HD WT
2023-2024 Chevrolet Silverado 3500 HD High Country
2023-2024 Chevrolet Silverado 3500 HD LT
2023-2024 Chevrolet Silverado 3500 HD LTZ
2023-2024 Chevrolet Silverado 3500 HD WT
2023-2024 GMC Sierra 2500 HD AT4
2024 GMC Sierra 2500 HD AT4X
2022-2024 GMC Sierra 2500 HD Denali
2023-2024 GMC Sierra 2500 HD Pro
2023-2024 GMC Sierra 2500 HD SLE
2023-2024 GMC Sierra 2500 HD SLT
2023-2024 GMC Sierra 3500 HD AT4
2023-2024 GMC Sierra 3500 HD Denali
2023-2024 GMC Sierra 3500 HD Pro
2023-2024 GMC Sierra 3500 HD SLE
2023-2024 GMC Sierra 3500 HD SLT

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