Ben Jolliffe took the spoils in the final race of the day after a bold move on the last lap to go from third to first at the chequered flag.
The polesitter had led off the line but soon dropped back as points leader Marley Mackenzie moved ahead on the opening lap and took control.
But Mackenzie was never able to build himself a solid gap and was kept honest throughout the 11-lap race by Luca Hopkins who snapped at his heels all the way and geared himself up for a last lap move.
Behind and running in third place, Jolliffe saw an opportunity as the pack headed into the Loop on the final lap and the three went three abreast, Jolliffe coming out on top with Hopkins second.
Mackenzie had to settle for third as Luca Wilkinson crossed the line fourth with Lewis Mullen fifth.
1pMobile National Junior Sportbike Championship, Race Two result:
1. Ben Jolliffe (Dunsley Heat Racing)
2. Luca Hopkins (Team SBR powered by DKS Drilling) +0.156s
3. Marley Mackenzie (Kirkcaldy Kawasaki) +0.259s
4. Luca Wilkinson (Speedyfreight/NW Racing) +2.375s
5. Lewis Mullen (DJ Racing) +2.385s
Championship positions after Round Two:
1. Marley Mackenzie 95
2. Ben Jolliffe 87
3. Luca Hopkins 76
4. Laken Payne 62
5. Lewis Mullen 56