Vortex 25th Anniversary Vortex 25th Anniversary Bas Kaligis / Friday, March 20, 2020 0 4286 Article rating: No rating From the World Championships conquered one year after its début, to the Rok Cup universe: the OTK Group engines division left an indelible mark in karting during its first 25 years, conquering over 100 international titles and, especially, the satisfaction of thousands of karting fans. Read more