Mine's is a tuning firm based in Yokosuka, Kanagawa Prefecture, Japan. Mine's was started by Tsuzo Niikura in 1985. They attracted attention 1988 by being among the first Japanese companies to sell re-programmed ECU systems for popular Japanese sports cars. Today they sell many products, ranging from injectors to complete engines.
Mine's currently makes software upgrades for hundreds of Japanese cars, but only make hardware upgrades for a few select cars. Their performance upgrades include exhaust systems, engine computers, camshafts, suspension parts, brake systems, and carbon fiber body parts. Mine's is also known for their work on the Nissan Skyline GT-R, specifically the R32, R33, R34 and R35 models.
Aside from the Skyline GT-R, Mine's also sells upgrades for other cars such as the Mitsubishi Lancer Evolution, the Subaru Impreza WRX, and the Nissan Fairlady Z. The Mine's Z is unusual because it remains naturally aspirated, unlike Z's from other tuners.