Conor Cummins denied Dean Harrison a clean sweep of pole positions at the Ulster Grand Prix when the Padgetts Honda rider put in a stunning lap of 134.138mph - just 0.7s outside the outright lap record - to top the leaderboard for the three Superbike races.
The Manxman was down the order for the first half of the session but once he got some clear track, he took full advantage and deposed Harrison from the top spot, his lap almost a second quicker than that of his Kawasaki rival.
The Bradford rider clocked 12 laps during the session, the most of any rider, and some nine more than Peter Hickman who only managed three laps before stopping out on the course on the Smiths Racing BMW.
His lap of 132.725mph was still good enough for third overall though with David Johnson the fourth and last rider to break into the 132mph bracket, with a lap of 132.135mph on the Tyco HP4 BMW.
Davey Todd’s impressive UGP showing continued as he lapped at 131.668mph on the Burrow Engineering Suzuki to place fifth quickest with Lee Johnston in sixth on the Honda Racing machine.
The leading six riders were the only ones to go above 130mph and it was Paul Jordan (Dafabet Devitt Racing Kawasaki) who took seventh with a speed of 129.374mph which was only slightly quicker than Sam West (PRL BMW) who recorded 129.354mph.
Michael Sweeney and Daniel Cooper rounded out the top ten from Dominic Herbertson and Ryan Kneen.