Honda will remain the official engine supplier for the Moto2 World Championship until the end of 2018 after an extension to its agreement was reached.

The Japanese firm has been the customer engine supplier for the series since its inauguration in 2010, entering into an agreement with ExternPro from 2013, which helps prepare the engines for competition and maintain them.

Though the existing deal was set to conclude at the end of the 2015 Moto2 season, the new contract with ExternPro and Honda will see it continue to supply the 600cc engine to the series.

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"Moto2 has been a success from the start, and just continues to get better," says Dorna CEO Carmelo Ezpeleta. "Honda has been our sole engine supplier since the inaugural race in 2010 and I am extremely pleased that we will continue to use its machinery for the next three years.

"The Honda engine has not only proved an exciting addition to the paddock, but has also been a technically very reliable asset, which is extremely important in motorsports. I would also like to welcome ExternPro on board, who have so far done a very good job during pre-season testing, and will no doubt continue to do so throughout the next three seasons."

"The Moto2 category continues to advance and prepare riders for the premier class and Honda are very happy to support this class for a further 3 years," added Shuhei Nakamoto, HRC Executive Vice-President. "Together with ExternPro and Dorna we will continue to work hard to provide the best equipment for this class."

Since 2010, Toni Elias, Stefan Bradl, Marc Marquez, Pol Espargaro and Esteve Rabat have been crowned Moto2 riders' champions.