Following's Sunday's Valencia season finale, MotoGP teams have travelled to Jerez for a two-day test and the last official track action of 2021.Marc Marquez is absent as he continues treatment for double-vision problems, while Repsol Honda team-mate Pol Espargaro is back on track after withdrawing from Valencia due to rib pain from a huge Saturday highside.The main task for the factory riders is to continue development work on their 2022 prototypes, which in the case of Yamaha, Ducati, Suzuki and Honda can feature engine upgrades for the first time since the Covid technical freeze at the start of 2020.KTM's engine was frozen at the start of 2021, when it left Concessions, while Aprilia...
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