@@user-uj8uz8gb1l Please contact the seller to see if the muffler itself is available. www.jet-inoue.co.jp/sound-parts/22064 www.jet-inoue.co.jp/contact Piping is not sold, so please prepare iron pipe and make it yourself.
The outer diameter is 114mm. The thickness is about 3mm, so the inner diameter is about 108mm. I bought the material a long time ago, so I've forgotten the exact dimensions.
@@abemaellarracas2744 I think of it like a brass instrument. If you make the pipe longer, it will produce a lower sound, and if you make it shorter, it will produce a higher sound. There is no recommended length. When you actually make one, it can sound different from what you imagined, so it's difficult.
@@abemaellarracas2744 It's difficult to express in words. The truck in the video uses Fuso's 385 horsepower V-8 engine and Matsuko's TD muffler. That's why you get that kind of sound.