Video: What’s Inside the Vortex Rok GP 125 Friday 1st April, 2022 by ksn_admin Please share! Derek at Power Republic runs his spanners over the new Vortex Rok GP 125cc TaG engine before bolting it to the dyno to see what numbers it pulls – then compares the output to IAME’s X30 and Rotax’s 125 MAX. advertisement . advertisement Please share!