4" Flange Mount Dual Stage Muffler (Mega Muffler) (Pair)

6" X 10" long Dual stage muffler. Mounting same as 6" flange, 3 bolt pattern with bolts welded on to accept nuts on the inside of the transom. 4" hose hook up. True performance stainless steel through transom mufflers that silences motors up to 500 horsepower without sacrificing power. It works so well that we have a patent on the design. Our internal silencing chambers, plus integral flapper help to eliminate engine backwash, while reducing the decibel levels through out the entire RPM range. Easy bolt on replacement for stock thru transom exhaust tips, or use the 4" clamp on version with your existing tips. 02-2464 replacement flaps are also available.(SOLD IN PAIRS)