







The COBRA RPT 3" Slip-On (manufacturer reference 6057B) is aimed at riders who want to enhance the acoustic character and appearance of their Harley Softail without altering the entire exhaust system. Designed for Milwaukee-Eight engines, this slip-on features an outer body of 3" (76.2 mm) that flares to 3.25" at the rear and constant velocity 2" cores for a distinctive sound signature and suitability for heavy displacements.
Black aesthetics and chrome finish for the outlet: the COBRA RPT adds a racing/classic touch while remaining true to the Harley spirit. Application examples: Softail Low Rider ST and Fat Boy 117 (2025 model year, 1923 cm3 engines). Check compatibility with your model before installation.