| 1954 |
Hideo Yoshimura (Pop Yoshimura) established "YOSHIMURA MOTORS" in Fukuoka. |
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| 1964 |
Champion in SUZUKA 18 hours endurance race. |
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| 1965 |
YOSHIMURA moved to Fussa, Tokyo.
The company was renamed to "YOSHIMURA COMPETITION MOTORS".
Yoshimura started tuning of S600. |
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| 1971 |
The first prototype 4-1 exhaust system was introduced by Pop and tried on CB750 in Ontario 250. |
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| 1972 |
Yoshimura started to sell the first 4-1 exhaust system in the world. |
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| 1973 |
Yoshimura expanded the business to U.S.A.. and established "YOSHIMURA RACING". |
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| 1974 |
"YOSHIMURA PARTS SHOP KATO" was established in Atsugi, Kanagawa. |
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| 1975 |
"YOSHIMURA RACING" was changed to"
YOSHIMURA R&D OF AMERICA"..
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| 1976 |
"YOSHIMURA PARTS SHOP KATO" moved to Motomachi, Atsugi. |
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| 1978 |
"YOSHIMURA PARTS SHOP KATO" moved to Yamagiwa, Atsugi. |
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| 1979 |
"YOSHIMURA PARTS SHOP KATO" was changed to "YOSHIMURA PARTS OF JAPAN". |
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| 1980 |
"YOSHIMURA PARTS OF JAPAN" moved to Aikawa, Aiko, Kanagawa. |
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| 1984 |
The company was renamed to Yoshimura Japan Co., Ltd.
Yoshimura started to sell first new cyclone designed to overcome street noise regulation. |
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| 1986 |
Invention of Duplex Cyclone which was improved from cyclone exhaust system. |
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| 1987 |
Invention and manufacturing of Sanper exhaust system for single cylinder engine. |
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| 1989 |
Hideo Yoshimura became the chairman.
Fujio Yoshimura became the president. |
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| 1990 |
Manufacturing of Yoshimura MCL Road Star (Mazda Eunos Road Star).
Muffler material was changed to all stainless.
JMCA, Japan Motorcycle Association was founded. |
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| 1991 |
Muffler manufacturing factory completed. |
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| 1992 |
Fujio Yoshimura invented MJN carburetor.
Using titanium and carbon materials for exhaust system & muffler was started. |
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| 1993 |
Chassis dynamometer was set next to the company. |
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| 1995 |
Yoshimura Cyclone muffler with one year warranty.
Mass production of titanium full system was started.
Hideo Yoshimura passed away. |
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| 1996 |
Production of titanium cyclone and hand bent titan cyclone for Super 7 started. |
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| 1997 |
Previous one year warranty on Cyclone muffler extended for two years.
Suzuki GSX-R Racing kit parts development & sales has been started officially. |
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| 1998 |
Production of new designed cyclone "Tri-Oval cyclone" started.
Muffler repair service "Yoshimura's care, Yoshimura warranty" started. |
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| 2000 |
Complete machine Yoshimura Hayabusa X-1 were released to the market.
(Base machine GSX1300R / 100 machines limited) |
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| 2001 |
Complete machine Katana 1135R were released to the market.
(Base machine GSX1100S / 5 machines limited)
Production of Catalyzed cyclone started. |
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| 2002 |
Complete machine Yoshimura Tornado S-1 were released to the market.
(Base machine GSX-R1000 / 50 machines limited)
Production of new designed cyclone "Mega Tri-Oval cyclone" started. |
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| 2003 |
Authorization of ISO9001.
Complete machine M450R released to the market. (Base machine DR-Z400 / Order made)
Production of new designed cyclone "Tri-Cone cyclone" started. |
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| 2004 |
50th Anniversary of the foundation.
New office building completed.
Complete machine Tornado III Zero-50 were released to the market.
(Base machine GSX-R1000 / 5 machines limited)
Production of EEC Approved Slip-On started.
Suzuki RMZ Racing kit parts development & sales has been started officially. |
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