Brayden Elliott took the opening win at Donington Park after a two charge at the end of a shortened race.
Following a red flag, the race was run over eight laps and while it had been poleman Davey Todd who led from the start but Elliott took the lead on the fourth lap and checked out.
Tim Neave, meanwhile, came through to take second ahead of Davey Todd as Alex Olsen was fourth ahead of Richard Kerr.
Pirelli National Superstock Championship with MotoNovo Finance, Donington Park, Race One
1. Brayden Elliott, CFS Filtration No Bull Racing
2. Tim Neave, Edwards Yamaha +0.162s
3. Davey Todd, Milenco by Padgetts Motorcycles +0.184s
4. Alex Olsen, FHO Racing with Kobelco +0.260s
5. Richard Kerr, AMD Motorsport +0.627s