Ash Barnes was declared winner of a dramatic closing race at Thruxton after the leaders crashed on the final lap and the first rider home was then handed a penalty.
Points leader Edoardo Colombi, Richard Cooper and Harrison Dessoy tangled and crashed out on the last lap, leaving Thomas Strudwick to cross the line first ahead of Barnes and Rhys Stephenson.
But moments later, race control slapped Strudwick with a one second penalty for cutting the course during the melee, dropping him back to third and promoting Barnes and Stephenson to first and second respectively.
Alfie Davidson took fourth as Zak Shelton rounded-out the top five.
Pirelli National Sportbike with Moneybarn Vehicle Finance, Race Two result:
1. Ash Barnes (Raceways Yamaha)
2. Rhys Stephenson (Rocket Racing) +0.400s
3. Thomas Strudwick (TS Racing) +0.493s
4. Alfie Davidson (IN Competition/SENCAT Aprilia) +12.763s
5. Zak Shelton (XMT Racing) +13.550s