1975 - Mr. Michio Makihara tuned the Nissan S30Z. This vehicle had a 2868cc motor that achieved a time of 12''49 @ 0-400m.

1982 - Mr. Michio Makihara tuned another S30Z, 3097cc that hit 253.08 Km/h
- "TRIAL Technical Service Shop" was formed in Osaka

1983 - "TRIAL Racing Sports Car Club" was formed and registered in the JAF

1984 -Nissan S130Z 3097cc single turbo hit 279.07km/h, this record stood as the best in Japan
Later that year TRIAL tuned a Nissan s130z, 2868cc twin turbo that achieved 307.955km/h.

1986 -Company name was changed from "TRIAL Technical Service Shop" to "TRIAL Co. Ltd."

1987 -Women's racing team "Chameko Club" was started

1988 -"Marine Project" started and opened a shop named "R-ing"

1989 - TRIAL exhibited at the Osaka motor festival

1990 - TRIAL made a supra JZA70 front lip spoiler. This spoiler achieved great sales as well as starting a body kit boom in Japan

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1991 - 1999 HISTORY

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1991 - TRIAL Minami Osaka branch stared and "R-ing" closed

1992 - TRIAL joined the MX5 JAF race

1993 -Corporate contract was formed with the "TI circuit"

1994 - TRIAL was named the "General Champion" at tuners Cannon Ball festival in Japan

1995 - TRIAL created an original alloy wheel which was named "Zelda"

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1996 - TRIAL made a commercial contract with the Central Circuit

1997 -A Nissan Skyline GTR hit over 300km/h at YATABE test racing circuit. This vehicle was built in co-operation with "Option"

1998 -A Nissan Silvia S14 full body kit "SILVI-R" was created.
- TRIAL also built a "GC Impreza TRY - R" vehicle the same year.
-Opened a new branch in Takamatu
- "Trial Higashi Osaka" shop and "Minami-Osaka" shop became integrated into "Tanjyo Mihara Osaka"

1999 - TRIAL entered a vehicle into the Cannon Ball race in the USA that run the whole distance from New York to Los Angeles

2000 - 2004 HISTORY

2000 - TRIAL created the second original alloy wheel "Zelda Magnum", which was exhibited at the Tokyo Motor Show

2002 -Toyota JZA80 Supra was built with a 3SGT motor. It achieved a 59''888 lap at the Tsukuba Circuit
- TRIAL Tottori branch opened
- Toyota Celica ZZ231 recorded a 1'02''416 lap at the Tsukuba Circuit

2004 - TRIAL R33 GTR made the "TI Circuit" official best lap of 1`34``985
- TRIAL Honda NSX made a record lap of 59``830 in the NSX class at the Tsukuba
- TRIAL Mitsubishi EVO 8 made a record lap of 1`35``526 at the "TI Circuit"

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