Dubbed as the Twin Kaye Cup, around 70 riders spread in different classes are expected to see action with Dumaguete's Irwin Ramas-Uypitching eyeing to pad his lead in the overall standings.
However, Uypitching will meet tough challenge from Pepo Rubi of Team Quickflight and a bunch of young and daring riders from PowerSports Racing.
Rubi owns the second leg title while Uypitching has the first and third leg and a victory in the fourth leg could mean a more comfortable lead for the latter.
Pepo's brother, Andot, on the other hand, is vying for his third straight win in the executive division.
The Abellars, Joshua, Jubenile and Jobannie and Samantha are also siblings to watch for as they try to extend their dominance in other classes.
Jon-Jon Adlawan, who missed the third leg, has confirmed his entry today.