TEXTS: MAURIZIO VOLTINI –
PHOTO: DOMENICO PAOLICELLI WITH THE COLLABORATION OF OFFICINE IN PROGRESS
The new competitive racing season of 2019 will see a fairly decisive change in the Rok Cup, namely in the Junior class in the championships taking place in Italy and in several other countries. In fact, the cadet category will be aligned to the Senior as regards the engine used, going from former Vortex 125 Rok “classic” to the latest GP model. Similarly to what was already happening, to differentiate the two categories there will be the addition of a “restricted” exhaust manifold on the Junior: a 25 mm diameter section (versus the Senior’s 38 mm) which reduces the power by 22 hp and, consequently, also the lap performances, which otherwise could have increased due to the different minimum weight between the two categories. In fact, we are talking about 145 kg for the Junior versus 160 kg for the Senior.