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Press releases from some of the MotoGP teams after the test at Barcelona:

Press releases from the World Superbike and World Supersport teams after Sunday's races at Portimao:

Press releases from the World Superbike and World Supersport teams, as well as the series organizer, after the first day of practice in Portimao:

Press release previews from the teams and organizer ahead of this weekend's World Superbike round at Portimao, in Portugal:

Press releases from the MotoGP teams after Sunday's Italian Grand Prix at Mugello:

Press releases from the World Superbike and World Supersport teams after the races at Donington Park:

Press releases from the World Superbike and World Supersport teams and the series organizer after qualifying at Donington Park:

Press releases from the World Superbike and World Supersport teams, as well as the series organizer, after the first day of practice at Donington:

MotoMatters.com is delighted to feature the work of iconic MotoGP writer Mat Oxley. Oxley is a former racer, TT winner and highly respected author of biographies of world champions Mick Doohan and Valentino Rossi, and currently writes for Motor Sport Magazine, where he is MotoGP correspondent. We will be featuring sections of Oxley's blogs, posted in full on the Motor Sport Magazine website, over the coming months.

The race to arm MotoGP’s private teams with higher-performance CRT bikes is gathering pace. Last summer Honda announced that they will sell a lower-cost version of their RC213V and then two months ago Yamaha confirmed that they will lease YZR-M1 engines from 2014. At Le Mans the whisper going round the paddock was that Aprilia are working on a pneumatic-valve spring cylinder head for their RSV4 CRT engine, which could be ready by September.

Press releases from some of the World Superbike and World Supersport teams after several incident-packed races at Monza:

Press releases from the World Superbike and World Supersport teams after qualifying on Saturday at Monza:

Press releases from the World Superbike and World Supersport teams after the first day of practice at Monza:

Press releases from the World Superbike and World Supersport teams ahead of this weekend's WSBK round at the iconic Monza circuit:

Press releases from the MotoGP teams and Bridgestone after the first day of practice at Jerez:

Press releases from the World Superbike series organizer, and World Superbike and World Supersport teams, after Sunday's thrilling races at Assen: