The rough-and-tumble visual feast of sheer guts and adrenaline that is the Underbone 150cc racing is back! After a one-round hiatus in Australia, the 30-man UB150 grid will be joining the AP250, SS600 and ASB1000 classes as they head to the Chang International Circuit this May 31 to June 2 for Round 3.

The first of two stops at Buriram this season will also feature the next generation of Thai talents through the inclusion of the Honda Thailand Talent Cup.

In all, 83 riders representing 13 countries will be racing at the 4.5km Chang International Circuit for Round 3.