The company tunes an races Honda vehicles in the Super GT championship, an, additionally, sells eftermarket parts tae amateur enthusiasts. It wis pairt o partnerships that wan the Formula 3000 championship in 1990 an 1991, an that eventually led tae Mugen's involvement in Formula Ane, frae 1992 tae 2000, an up to 2005 wis the exclusive supplier o Formula Nippon ingines.