These D&D ‘Boss’ series four inch diameter mufflers are supplied with all necessary hardware and are designed for factory headpipes or any headpipe that is designed to accept factory mufflers. Style options include back-cut and slant cut, which follows the saddlebag angle. Wrapped, louvered baffle emits a bassy rumble.
D&D’s philosophy is to trust their own R&D program, developing their product line to reflect what they learn during their countless hours of testing on the D&D dyno. But they didn’t stop after they made big power, they also built systems that are engineered to fit and look great! Inspect a D&D pipe, and you’ll find true craftsmanship—from the hand-ported inlets and collectors, hand-fit heat shields with machined and welded steel clamp brackets, heavy-duty mounting supports and flawless finishes, you’ll know you made the right choice for your Harley®.
All models are available in brilliant chrome or high-temperature black powder coat finish.
Four inch diameter mufflers, supplied with all necessary hardware and are designed for factory headpipes or any headpipe that is designed to accept factory mufflers. Style options include back-cut (longer at the top) or ‘slant-cut’ (shorter at the top which follows the saddlebag angle). Wrapped, louvered baffle emits a bassy rumble.
All Exhaust Systems listed on this page are designed solely for Competition Race Use Only.
Not designed or legal for use on a public highway.
Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.
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