Our JDS248 (M, 40, 320, 420 up to SN: 135025) and JDS250 (330, 420 SN: 135026 & up, 430, 435, 440, 1010 gas) incorporate factory specifications for dimensions and baffling. When you install these new mufflers you will hear the same sound you would have heard in the 1950’s. Don’t forget the adapter for JDS250. Our JDS251 is also available. In addition to the improved redesigns, JDS248, JDS251 have a stamped mounting flange and JDS250 includes a clamp.
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