The Sunbury, Ohio plant was established in November 1986 under the name of Sunbury Component Industries. In April 1994 Sunbury Component Industries, Blanchester FCM and Showa American merged to form American Showa, Inc.

American Showa Sunbury plant and the Head Office division are located at 707 W. Cherry St., Sunbury, Ohio on 39 acres with a floor space of 251,101 sq. ft.  The Sunbury plant manufactures suspension and steering components for the transportation industry including automotive, motorcycle, and All-Terrain Vehicles.  Its' operations include assembly, welding, cathodic electro-static  and powder coat painting, in-line spring installation and testing, spring forming, sintering and stamping.

Mass production of the Honda Civic shock absorbers began in August 1988.  The following year in September the Honda Accord shock absorber models were added. 

In the 1990's American Showa grew in sales with new customers, Suzuki, Subaru, Mitsubishi Motor Manufacturing, Yamaha, and Kawasaki.  Additional models for Honda included the Acura and Odyssey . In 1991 inventory of Harley Davidson motorcycle front forks and rear shock absorbers made at Showa, in Japan was held at the Sunbury Plant until their mass production start in 1997.   

After the merger in 1994 the Sunbury plant added to its production ATV, motorcycle shock absorber and power steering component parts.  American Showa Sunbury plant continues to produce various models for its customers and it has brought in-house new processes such as sintering and stamping.

                                         AMERICAN SHOWA SUNBURY LOCATION IS CERTIFIED TO ISO9001 & ISO14001