Designed to increase horsepower and torque while providing an aggressive, low-frequency sound level 1.75in. to 1.875in. to 2in. high-flow 16-gauge stepped primary headers with a 2.5in. collector 4.5in. diameter, 16-gauge HP-Plus muffler with 2.5in. inlet Removable 1.5in. absorptive baffle with 3in. reverse cone outlet to maximize torque; baffle is wrapped in stainless steel wool and high-temp fiberglass for a rich mellow tone 2.50in., 220deg., 16-gauge heat shields 18mm and 12mm O2 bungs welded into the primaries Optional Ghost pipe available separately to give a 2-into-2 look Made in the U.S.A. Please note: Images are a representation of the item only. Actual item may differ. Some images will show accessories or parts that are NOT included with this listing. Please read the listing title,.