James Bull celebrated victory in the Last Chance Qualifier race after leader Robert Varey crashed out on the penultimate lap, ending his race weekend early.
Bull, who had been running second, moved into the lead to take the win, followed home by Harley Prebble, 2.583secs behind as Scott Carson took third.
Dave Grace secured fourth place with Tom Stevens fifth.
ABK Beer 0% BMW Motorrad F 900 R Cup, LCQ result:
1. James Bull (Ready4Racing Vision Team)
2. Harley Prebble (LDH Contracts/2 Strokes Racing) +2.583s
3. Scott Carson (Team Cryosol) +4.558s
4. Dave Grace (Peterpan Racing) +5.947s
5. Tom Stevens (Tech 5 Racing) +6.064s