Yesterday at Aragon, Brad Binder, the newly-crowned Moto3 champ, should have been climbing on the KTM Moto2 that he'll ride next year for the first time. However, the regulation forbids a rider competing in any given class from riding a bike from another class during an official IRTA test, like yesterday's test.
So the South African will have to wait to test the new KTM, though he did have the best possible 'substitute' yesterday. The Austrian Moto2 was actually taken out on track by current world champion, Johann Zarco. The Frenchman races for team Ajo, the outfit that will use the KTM next season as it makes its debut in Moto2.
The Austrian bike has a Honda engine of course, as per the regulation. Also in this case, as in Moto3 and MotoGP, the Austrian designers have chosen a trellis frame, now a distinctive characteristics of the Mattighofen bikes.