Rinehart Exhaust Systems by Bub for ’06 Dyna models are available through Drag Specialties. The pipes feature a unique header design utilizing multi-bend radius technology and an oxygen sensor port on each pipe, which accepts OEM sensors. The three-step header pipes start at 1-3/4 inches at the head, increase to 1-7/8 inches, and finish at 2 inches. Header pipes feature permanently mounted 2-1/2-inch diameter full-length heat shields. Rinehart Exhaust Systems are highlighted by the polished black-anodized billet aluminum end caps engraved with the Rinehart logo.