Khrome Werks 2-Into-2 Dominator Exhaust System With 4-1/2 Mufflers For Harley The Khrome Werks 2-Into-2 Dominator Exhaust System enhances sound and performance, offering improved horsepower and low-end torque, paired with a rich, mellow tone. Features: Full 2 left side crossover and 4-1/2 muffler bodies with 2 inlets 1-3/4 to 1-7/8 to 2 high-flow 16-gauge three stepped primary headers Enlarged interconnected headers make for improved horsepower and low-end torque 2-1/2, 220 16-gauge heat shields Baffles are wrapped in stainless steel wool and high-temp fiberglass for a rich mellow tone Heavy-duty AccuSeal reaction-block header-to-muffler clamps included 18 mm and 12 mm O2 bungs welded into the primaries Made in the USA