125cc

RS125R1987-2009

1987
Debut
1990
Loris Capirossi becomes champion on RS125R
1995
Haruchika Aoki becomes first Japanese champion on RS125R
1996
Haruchika Aoki dominates GP125

Commercial Road Racing Machine: Victor of 131 Races

Of the 700 world championship wins Honda has achieved, one-fifth - or 131 wins - is due to one machine. The history of Honda and world championship racing cannot be spoken without mention of the RS125R commercial road racing machine. The most distinguishing feature of the RS125R is its engine positioning. By raising the engine, thus raising the center of gravity, the RS125R could accelerate through corners with a minimal drop in speed and engine revs, giving birth to its unique thin, long form. The RS125R, the culmination of such innovative ideas, entered world championship racing in 1987. 125cc class racer Ezio Gianola finished his first season on the RS125R 6th with no wins. In 1988, on his second attempt, he was ranked 2nd after winning the West German and British Grands Prix, Honda's first 125cc grand prix win since it had last competed with 4-stroke machines in 1966. At the 1989 season-opening Japanese Grand Prix all top-ten places were dominated by RS125R riders. Although Gianola did not secure the riders' title this year, Honda won the constructors' title, proving the RS125R was a world-class racing machine. In 1990, RS125R riders Hans Spaan, Doriano Romboni and Loris Capirossi fought for the championship, with Capirossi emerging the victor. RS125Rs won 11 out of 14 grands prix and dominated the top 5 positions in the riders' championship. By this time, people began to wonder if it was possible to win a 125cc race without the RS125R. With time and the further rise of the RS125R, Japanese riders began to appear in the spotlight, and in 1995 and 1996, RS125R rider Haruchika Aoki became the first Japanese RS user to become champion. Until its development virtually ended in 2004, and kit parts development ended in 2005, the RS125R consistently led the 125cc class, giving birth to 7 champions and 11 constructors' titles.

Engine
2-stroke single-cylinder
Displacement
124cc
1995 Haruchika Aoki