Showa is a brand of high-performance automotive, motorcycle and outboard suspension systems of Hitachi Astemo, based in Gyoda, Saitama in Japan.

[citation needed] Banned from developing or manufacturing aircraft systems after the war, Showa entered the car components industry, using its aircraft knowledge to develop specialist suspension products for motorcycles made by the new company Honda.

Showa remained IndyCar Series shock absorber supplier since 2012 but only for Honda-powered teams.

In October 2019, Showa began to be merged into Hitachi Automotive Systems as their supplier of steering and suspension components, along with Keihin and Nissin Kogyo, also partners of both Honda and Hitachi.

[6] The merger was completed in January 2021,[7] with the resulting parts supplier known as Hitachi Astemo (Japanese).