The Bull Horn 6 In Reduced to 5 In O.D Stack is a practical and versatile product that offers a range of benefits. With a reduced outer diameter from 7 inches to 5 inches, this stack is 48 inches long and features a sleek chrome finish. Its bullhorn style design fits most makes and models, making it a versatile choice for various vehicles. Sold individually, this stack is a reliable and durable option that enhances the performance and appearance of your vehicle.