EXHAUST

BESTfit Kenworth Steel 90 Degree Exhaust Pipe ElbowUpgrade your exhaust system with this reliable Exhaust Pipe designed for trucks equipped with a horizontal muffler. Crafted from durable steel and featuring a 90-degree angle, this aftermarket...

BESTfit Kenworth Steel 90 Degree Elbow At Muffler InletEnhance your vehicle's exhaust system with this durable Elbow made of quality steel. Designed for optimal performance, this aftermarket replacement part is sold individually, offering a reliable...

BESTfit Exhaust Elbow Fits KenworthUpgrade your exhaust system with this top-quality Exhaust Elbow made from robust chrome-plated steel. Featuring a 5-inch outer and inner diameter, this elbow is precisely crafted for durability and optimal performance...

BESTfit Driver Side Exhaust Elbow Chrome-Plated Enhance your exhaust system with this premium Exhaust Elbow crafted from durable chrome-plated steel. Designed with precision, this elbow features a 5-inch diameter and a 20-degree bend, catering to your...

BESTfit Exhaust Y-Pipe Fits Kenworth Upgrade your vehicle's exhaust system with this top-notch Exhaust Pipe, constructed from robust steel for long-lasting durability. With a practical 5-inch length, it suits various applications and is sold individually...

BESTfit Kenworth Steel Exhaust Y-PipeEnhance your vehicle's exhaust system with this reliable Exhaust Pipe. Crafted from durable steel, this aftermarket replacement part ensures durability and optimal performance. With a convenient 5-inch length, it is...

High Flow Stock Muffler ReplacementThis high flow replacement type one muffler is designed to work with most engines. With a bolt in design, it easily replaces a 10 inch diameter stock muffler without increasing noise level. Studies have shown a minimum...

BESTfit Freightliner Turbo PipeOur American-made pipe is a reliable aftermarket replacement part, sold individually for your convenience. Crafted with precision and quality materials, this pipe ensures durability and longevity. Trust this aftermarket...

BESTfit Chrome-Plated Steel Y Exhaust Pipe W/ 5 Inch O.D. Inlet & OutletsUpgrade your exhaust system with this premium Exhaust Y-Pipe made of durable chrome-plated steel. Designed for optimal performance, it features a 5-inch outer diameter inlet and two...

BESTfit 8 Inch Stack Muffler InsertLet 4 State Trucks help you reduce the high pitch, harsh tones that can be found in a diesel exhaust with this quality Exhaust Muffler Insert. Fit snugly into the base of an 8 inch O.D. stack, it can reduce exhaust...

BESTfit Chrome Steel Exhaust Muffler W/ Internal Louvered CoreThis is a chrome-plated steel muffler designed for various applications. It features a 38.4-inch body length, a 6-inch body diameter, a 5-inch inlet, and a 6-inch outlet. The overall length of...

BESTfit Chrome Exhaust MufflerUpgrade your vehicle's exhaust system with these premium Chrome-Plated Steel Mufflers. Featuring a sturdy construction, these mufflers have a body diameter of 6 inches, along with a 6-inch inlet and outlet for optimal...