Asher Durham charged to a commanding win in the final race at Knockhill, beating points leader Kas Beekmans by 3.208secs.
Durham flew off the line from second on the grid and into the lead at the start, as local rider Adon Davie powered up to second ahead of Fenton Seabright, who had won both of the weekend’s earlier races.
But Seabright’s hopes of a triple win ended in the gravel on Lap Six when he crashed out, as Beekmans settled into second place to finish runner-up.
Alfie Davidson got the better of Davie on the final lap to take third, as Ash Barnes rounded out the top five.
Pirelli National Sportbike Championship, Race Three:
1. Asher Durham (Powerslide Suzuki)
2. Kas Beekmans (VLR/NIWA Racing) +3.203s
3. Alfie Davidson (SENCAT by Swan Racing) +6.218s
4. Adon Davie (Moto 12/CFMoto) +6.367s
5. Ash Barnes (Raceways Yamaha) +9.126s
Championship positions after Round Four:
1. Kas Beekmans 166
2. Fenton Seabright 122
3. Harrison Dessoy 120
4. Asher Durham 107
5. Ferre Fleerackers 92