| Dubro muffler extension designed for .40 to .46 size engines. This muffler extension provides an extra 1/2" spacer between the engine cylinder and muffler expansion chamber, allowing for more attractive cowling. Designed to the ASP, Magnum, O.S., and Thunder Tiger .40 to .46 engines. Includes two (2) 3mm x 50mm screws. Dimension between screws is 1 7/16". |