https://www.fujitsubo.co.jp/

Fujitsubo Giken Kogyo Co., Ltd. is a manufacturer of automotive mufflers and transportation equipment headquartered in Nishi-ku, Yokohama, Kanagawa Prefecture. The motorcycle company Fujitsubo Motors (currently Fujitsubo Motors), which opened in Fukuoka Prefecture on February 10, 1931, began and has gained overwhelming recognition and trust from users as a tuning manufacturer. It has also been highly evaluated in terms of quality. Taking advantage of its high quality, it not only produces under its own brand, but also develops jointly with automakers such as Nissan, and sells it as a genuine product such as a manufacturer's optional sports muffler.