|1954||Hideo Yoshimura (Pop Yoshimura) established "YOSHIMURA MOTORS" in Fukuoka.|
|1964||Champion in SUZUKA 18 hours endurance race.|
|1965||YOSHIMURA moved to Fussa, Tokyo.|
The company was renamed to "YOSHIMURA COMPETITION MOTORS".
Yoshimura started tuning of S600.
|1971||The first prototype 4-1 exhaust system was introduced by Pop and tried on CB750 in Ontario 250.|
|1972||Yoshimura started to sell the first 4-1 exhaust system in the world.|
|1973||Yoshimura expanded the business to U.S.A.. and established "YOSHIMURA RACING".|
|1974||"YOSHIMURA PARTS SHOP KATO" was established in Atsugi, Kanagawa.|
|1975||YOSHIMURA RACING" was changed to" YOSHIMURA R&D OF AMERICA".|
|1976||"YOSHIMURA PARTS SHOP KATO" moved to Motomachi, Atsugi.|
|1978||"YOSHIMURA PARTS SHOP KATO" moved to Yamagiwa, Atsugi.|
|1979||"YOSHIMURA PARTS SHOP KATO" was changed to "YOSHIMURA PARTS OF JAPAN".|
|1980||"YOSHIMURA PARTS OF JAPAN" moved to Aikawa, Aiko, Kanagawa.|
|1984||The company was renamed to Yoshimura Japan Co., Ltd. Yoshimura started to sell first new cyclone designed to overcome street noise regulation.|
|1986||Invention of Duplex Cyclone which was improved from cyclone exhaust system.|
|1987||Invention and manufacturing of Sanper exhaust system for single cylinder engine.|
|1989||Hideo Yoshimura became the chairman.|
Fujio Yoshimura became the president.
|1990||Manufacturing of Yoshimura MCL Road Star (Mazda Eunos Road Star).|
Muffler material was changed to all stainless.
JMCA, Japan Motorcycle Association was founded.
|1991||Muffler manufacturing factory completed.|
|1992||Fujio Yoshimura invented MJN carburetor.|
Using titanium and carbon materials for exhaust system & muffler was started.
|1993||Chassis dynamometer was set next to the company.|
|1995||Yoshimura Cyclone muffler with one year warranty.|
Mass production of titanium full system was started.
Hideo Yoshimura passed away.
|1996||Production of titanium cyclone and hand bent titan cyclone for Super 7 started.|
|1997||Previous one year warranty on Cyclone muffler extended for two years.|
Suzuki GSX-R Racing kit parts development & sales has been started officially.
|1998||Production of new designed cyclone "Tri-Oval cyclone" started.|
Muffler repair service "Yoshimura's care, Yoshimura warranty" started.
|2000||Complete machine Yoshimura Hayabusa X-1 were released to the market.|
(Base machine GSX1300R / 100 machines limited)
|2001||Complete machine Katana 1135R were released to the market.|
(Base machine GSX1100S / 5 machines limited)
Production of Catalyzed cyclone started.
|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.
|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.
|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.
|2006||Developed and started sales of exhaust system "Exhaust Shooter Package" (stepping motor & control unit).|
Developed and started sales of Dual Stack Air Funnel.
|2007||Developed and started sales of exhaust system "High Flow Magic" (catalytic converted system).|
Developed and started sales of 4st Mini Cylinder Head Kit parts.
|2008||Developed and started sales of new type silencer sleeve "Metal Magic".|