The 24 Inch West Coast Curve Top Stack with 7 Inch I.D. Plain Bottom is a high-quality, chrome-plated exhaust that fits most truck makes and models. With its 7-inch inside diameter and expanded and slotted end, this stack offers optimal performance and durability. Designed with OEM quality in mind, it is a practical and reliable choice for truck owners. Sold individually, this stack is measured by its inner diameter and is a perfect replacement for OEM numbers. Upgrade your truck's exhaust system with the Lincoln Chrome 11112015BJJ stack for enhanced performance and style.