Gibson 02-05 Chevrolet Avalanche 1500 Base 5.3L 2.25in Cat-Back Dual Split Exhaust - Aluminized Drivetrain>Clutch Kits - Single do not require a tune

do not require a tune and are ready for the track or the street

and you should consider the Track Edition

The AEM 21-640C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing

This 6” tall 360-degree radial flow air filter features a 4-1/2” round flange and our oil-free Pro DRY S media with three layers of synthetic media for maximum convenience

Gibson 02-05 Chevrolet Avalanche 1500 Base 5.3L 2.25in Cat-Back Dual Split Exhaust - Aluminized Drivetrain>Clutch Kits - Single do not require a tuneFor the enthusiast who wants an awesome look and aggressive throaty sound this Dual Split Cat back exhaust is for you. Gibson Exhaust Systems decrease backpressure and produce more torque and increased horsepower. 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