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The 17-year-old has retained Repsol backing for his move, and will ride a Suter chassis, which he will test for the first time at Jerez tomorrow.
Marquez dominated the 125cc class in record-breaking style this year, taking 10 race wins and 12 pole positions as he recovered from accidents in the early rounds to beat Nico Terol and Pol Espargaro to the title.
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