Mugen Motorsports

Hirotoshi Honda began building racing cars in a workshop at his father's house before graduating from Nihon University in 1965. Masao Kimura, a veteran racer with more than 50 victories in Honda sports cars and single-seaters, had worked at Honda R&D and Honda Racing Service before joining Honda to establish Mugen in 1973.

The company initially produced special parts for motocross bikes, then expanded in step with Honda's growing vehicle lineup. Starting with the Honda Civic's 1200cc engine, Mugen developed expertise across both two-stroke and four-stroke units, eventually manufacturing many major engine components in-house. The company's first road car body kit appeared in 1984 for the Honda Ballade CR-X, leading to a series of factory-adjacent production and performance vehicles.

Mugen's Formula One involvement began in 1991 when it prepared Honda V10 engines for Tyrrell, using units based on engines McLaren had run in 1989 and 1990. From 1992 those engines were rebranded as Mugen units and transferred to Footwork, with Aguri Suzuki and Michele Alboreto driving. After Honda's factory withdrawal at the end of 1992, Mugen continued independently.

The company's F1 career included partnerships with Team Lotus in 1994 and Ligier from 1995. With Ligier in 1996, Mugen achieved its most significant Formula One result when Olivier Panis won the Monaco Grand Prix, the team's first — and last — Formula One victory. The Ligier outfit scored 24 points in 1995 and 15 in 1996 despite that unexpected Monaco win.

The defining chapter of Mugen's F1 story came with Jordan Grand Prix from 1998 to 2000. After a troubled first half of 1998, Jordan's fortunes transformed at the Belgian Grand Prix when Damon Hill and Ralf Schumacher finished first and second — Jordan's first-ever Formula One victory, powered by Mugen. The 1999 season brought further success: Heinz-Harald Frentzen won in France and Italy and contended for the Drivers' Championship at stages of the year, and Jordan finished third in the Constructors' standings with 61 points, the team's best result. Mugen left Formula One after the 2000 season, with Honda resuming full factory supply to Jordan for 2001 and 2002.

Mugen built early success in single-seater formulae below F1. In European Formula Three, Mugen engines won the French title with Éric Hélary in 1990 and the British title with Mika Häkkinen in 1990 and Rubens Barrichello in 1991, both at West Surrey Racing. In Japan, Mugen won eight Formula Three titles from 1988 onwards.

When European Formula 3000 became a spec series in 1996, Mugen became the exclusive engine supplier for the Japanese equivalent — Formula Nippon — a supply relationship that lasted until the 2006 season. In European F3000, Mugen's MF308 engine won the championship with Jean Alesi in 1989, driving for Eddie Jordan Racing.

In Japan's top GT series, Mugen ran NSX models with considerable success. In 2000, the Mugen/Dome NSX partnership won the GT500 championship with Ryo Michigami, despite the team not winning a single race that season due to regulatory constraints. The following years brought multiple race wins across Mugen-affiliated NSX entries, with victories in both GT500 and later GT300 categories.

Mugen also developed the MF408S, a naturally aspirated 4.0-litre V8 producing over 612 horsepower, intended for LMP1 prototype racing in the 24 Hours of Le Mans and the American Le Mans Series. Its debut came in a Panoz chassis at the 2002 Sebring 12 Hours.

In motorcycle competition, Mugen became the dominant force in the TT Zero electric class at the Isle of Man TT. Competing from 2012 with its Shinden-series electric motorcycles, the team raised the average lap speed of TT Zero competitors from 102.215 mph in 2012 to 121.91 mph in 2019. By 2019 Mugen had won five TT Zero races outright, with riders including John McGuinness, Bruce Anstey, Guy Martin, and Michael Rutter. In 2018, Michael Rutter broke the 120 mph barrier for the class with a lap record of 121.824 mph.

Following a tax evasion allegation against Hirotoshi Honda in late 2003, Mugen was restructured in early 2004 with the establishment of M-TEC Company Ltd. The new entity retained the Mugen trademark, the Asaka headquarters in the northern suburbs of Tokyo near Honda's R&D facility at Wako, and the existing workforce. Former Mugen board member Shin Nagaosa, who had led the engineering division and overseen the NSX racing programme, headed the restructured company. M-TEC continues to use the Mugen brand and serves both professional motorsport and the consumer aftermarket for Honda vehicles.