Gibson 20-22 Chevrolet Silverado/GMC Sierra 2500-3500 HD Crew Cab Cat-Back Exhaust - Stainless Rear Lip Caps This muffler is tuned for

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Gibson 20-22 Chevrolet Silverado/GMC Sierra 2500-3500 HD Crew Cab Cat-Back Exhaust - Stainless Rear Lip Caps This muffler is tuned forGibson Single Side Exhaust is perfect for improved acceleration, maximum hill climbing, towing and passing power. This is our best performing Exhaust System. Exits behind the rear tire. Quieter in the cab than any other Performance Exhaust. Dyno test results show it makes maximum torque and horsepower at low end (1800 to 3000 RPM). Horsepower gains average 10 15 and 15 20lb ft of increase torque. Hassle free, bolt on installation with professional