Khrome Werks 2-Into-2 Icon-Sr Exhaust System866160541 Product Description Engineered for performance, style, and sound Improves torque and horsepower Removes OEM catalytic converter to reduce heat and improve rider comfort Fits directly under factory heat shields to maintain OEM styling Mounts with factory hardware and crossover 18 mm and 12 mm O2 bungs welded into header primaries for street legal tuning or race only applications 16 gauge 1 3 4" primaries 4 1 2" HP Plus compliant mufflers