Features full 2" left side crossover and 4-1/2" muffler bodies with 2" inlets
All Twin Cam Systems feature: 1-3/4" to 1-7/8 high-flow 16-gauge two 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
Optional inserts boost low-end performance (available separately)
Made in the U.S.A.