Abstract: An exhaust connection coupler is provided having a flexible conduit portion, a cover made of a generally porous and flexible knitted metallic wire mesh material surrounding the conduit portion and a retainer for combining end parts of the conduit portion and cover. The cover may be constructed of a series of stockinette stitches formed in a continuous round-and-round manner in a seamless tubular configuration. The cover can be selected from a group of covers designed to be applied to the coupler, the particular cover being chosen for its weight or stiffness so as to selectively control the natural frequency of the coupler. Additionally, the loosely knitted configuration of the cover is designed to provide resistance limiting longitudinal growth of the coupler while enabling compression and angular flexibility. Further, the coupler may include one or more spacers for providing separation between the cover and the conduit portion.