- Upgrade your semi truck with our premium 120 Inch Stacks, meticulously designed to enhance both performance and style. Our extensive range includes the 120 Inch Miter Top Stack 8 Inch OD Plain End, 120 Inch Mitred Top Stack 8 Inch, 120 Inch Curved Top Stack 8 Inch OD Plain End, 120 Inch Curved Top Stack 8 Inch, 120 Inch Bullhorn Top Stack 8 Inch, 120 Inch Bull Horn Top Stack 8 Inch, 120 Inch Flat Top Stack 8 Inch Outside Diameter, 120 Inch Flat Top Stack 8 Inch Inside Diameter, 120 Inch Short 30 Top Stack 8 Inch Outside Diameter, 120 Inch Short 30 Top Stack 8 Inch Inside Diameter, 120 Inch West Coast Curved Top Stack 8 Inch Outside Diameter, 120 Inch West Coast Curved Top Stack 8 Inch Inside Diameter, Lincoln 120 Inch Diablo Top Stack 8 Inch Left Side, Lincoln 120 Inch Diablo Top Stack 8 Inch Right Side, and the 120 Inch Diablo Exhaust with 8 Inch I.D. Each stack is crafted for durability and optimal exhaust flow, ensuring your truck not only looks impressive but also performs at its best. Whether you prefer the sleek lines of a Mitred Top, the bold statement of a Bullhorn, or the classic appeal of a Curved Top, we have the perfect stack to match your style. Our stacks are easy to install and built to withstand the rigors of the road, making them a smart investment for any trucker. Choose from a variety of finishes and diameters to customize your truck's look and performance. Don't settle for ordinary—elevate your semi truck with our top-of-the-line 120 Inch Stacks today! Whether you're converting 33mm to inches, upgrading with 57 inch tail lights, or considering a 4 inch exhaust pipe, our stacks are the perfect complement. Explore our selection and transform your truck's appearance and efficiency now.