Milwaukee Eight, 107CI, Euro 4, Fits 2018 to present Softail FLSB Sport Glide & FLSL Slim, chrome with black sculpted endcapsFreedom Performance Racing Series mufflers are 3 1 4" (83mm) in diameter and fit stock headers, as well as most aftermarket header systems designed for these models. Race version mufflers feature removable baffles and give that sought after sound, Quiet baffels for these are also available. Sold in pairs or single muffler as indicated below. Note: Pre assembled Sold as it is, no stock return, no warranty