2-into-1 Stainless Exhaust System with 4" Super Bike Muffler

2-into-1 headers welded to collector and muffler. Stepped 1-3/4" to 1-7/8" head pipes. Utilizes an advanced inner collector for maximum performance. Partial stainless heat shields. Removable baffle. Hand TIG welding. Includes 18 mm O2 sensor ports and 12 mm adapters. Made in the U.S.A..