From full Exhaust Kits to Clamps, Brackets and everything in between, 4 State Trucks has your Peterbilt 379 covered. Choose from our wide selection of Chrome Straight Stacks, Muffler Top Stacks, Mufflers, Elbows, Y-Pipes, Heat Shields, Grab Handles, Sleeves and Wraps. Enjoy our best price guarantee and free shipping on 6, 7 and 8 inch chrome exhaust kits.