Henry Snell held off James Cook to power to his sixth Superteen victory of the season as racing got underway at Knockhill.
After a dominant start to the weekend, the Australian got a good launch off the line from pole to hit the front, quickly edging a gap over his rivals.
And despite coming under some pressure from Cook in the closing laps, Snell managed to successfully negotiate backmarkers on the final lap to cross the line 0.232s clear of Cook.
Local rider Troy Jeffrey took third, ahead of Greg Marshall as Marley Mackenzie rounded out the top five.
AJN Steelstock Kawasaki British Superteen Championship, Race One:
1. Henry Snell (ROKiT Rookies Kawasaki)
2. James Cook (Josh Davies Motorsport by Uggly & Co) +0.232s
3. Troy Jeffrey (ROKiT Rookies Kawasaki) +6.796s
4. Greg Marshall (ROKiT Rookies Kawasaki) +9.220s
5. Marley Mackenzie (ELPM/Kirkcaldy Kawasaki) +11.642s