HD-FXDF-III-X5.11 Utah III slip-on mufflers. Euro 4. Matte black

These Miller Utah III slip-on mufflers are a premium upgrade for the 2017 Twin Cam Dyna Fat Bob 103. Sold as a pair, these German-made stainless steel mufflers feature a heat-resistant matte black finish and are topped with Tapered style matte black billet aluminum end caps. They carry Euro 4 EC-BE approval, ensuring they are street legal throughout the EU while providing that signature Harley-Davidson growl. With an 85mm diameter, these slip-ons typically offer a performance increase of 2-3 horsepower and 3-4 Nm of torque without requiring an ECU remap. The kit includes catalytic converters, removable dB killers for maintenance, and all necessary installation hardware. They mount directly to your stock head pipes for a quick and easy setup.