Click here for full BSB FP1 results from Knockhill
Luke Mossey has set the benchmark at Knockhill on the Quattro Plant Kawasaki by pulling out a two-tenths lead on Leon Haslam in the opening free practice session.
The Cambridgeshire rider leapt to the top of the times with just under five minutes remaining with a 48.507s and despite a late improvement from the current MCE British Superbike championship leader Mossey held top spot in Scotland.
Michael Laverty, who had headed proceedings midway through FP1, ended the session third ahead of Honda duo Jason O'Halloran and Dan Linfoot.
ePayMe Yamaha's John Hopkins found remarkable gains to jump to sixth quickest ahead of four-time BSB champion Shane Byrne, with Christian Iddon James Ellison and Tommy Bridewell completed the top ten.
With a dry track but moisture in the air Haslam set the early running there was a certain level of precaution while getting up to speed at Knockhill. Tyco BMW's Laverty led the opening charge into the 48-second bracket but the times failed to challenge any lap records with conditions remaining dry but cool.
With less than 10 minutes remaining Haslam regained his place at the top before Mossey's timesheet topper but in a competitive session less than a second covered the top 18 riders.