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These mufflers start as round 4-inch tubes, then bell out to 4.5-inches, for an aggressive and classic design at the rear. We then roll the end of the muffler tip to give them a clean, finished look. Internally, these NH mufflers have a spun and louvered baffle, but only for 8-inches. This is done in order to produce an aggressive bark with great performance. At the end of the baffle is a trumpet shaped inner tip that works in harmony with the belled end, creating a unique look.
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The following are all trademarks of The Harley-Davidson® Motor Company, Milwaukee, WI, U.S.A. Street 750, V-Rod, Sportster, Super Low, Iron 883, Roadster, Forty-Eight, Seventy-Two, Dyna, Street Bob, Low Rider, Fat Bob, Wide Glide, Switchback, Softail, Breakout, Fat Boy, Slim, Deuce, Freewheeler, Tri-Glide, Road King, Electra Glide, Ultra Classic, Street Glide, Road Glide, HDMC, Screamin Eagle, H-D.
The state of California considers aftermarket exhaust systems to be legal replacement parts for non-catalyst equipped motorcycles and/or if slip-on mufflers are installed downstream of the OEM catalysts.
California does not allow the use of aftermarket systems that remove original equipment catalysts, (except for racing use only) unless the Air Resources Board has issued an Executive Order for that system.
For California riders we offer Air Resources Board approved Fi2000 R ARB units. (ARB E.O. No. D-633-1). All other Fi2000 models are not legal for street use in California.