Powerslide Suzuki’s Asher Durham was fastest out of he blocks as the Knockhill weekend began, clocking the fastest FP1 lap of 53.900secs.
With riders split into two groups for practice, Durham topped the Group B timesheets by 0.026 secs over Ferre Fleerackers, with Harrison Dessoy third quickest.
Fenton Seabright, who was quickest in Group A, was fourth overall with a best lap of 54.922s with Taylor Moreton rounding out the top five.
Pirelli National Sportbike Championship, FP1:
1. Asher Durham (Powerslide Suzuki) 53.900s
2. Ferre Fleerackers (B.art Racing Team) 53.926s
3. Harrison Dessoy (PHR Performance Triumph) 54.565s
4. Fenton Seabright (FHS Racing/RD Racing) 54.922s
5. Taylor Moreton (Powerslide Suzuki) 55.222s