Ryan Farquhar was second on his Kawasaki

Farquhar went round at 123.36mph on his Kawasaki with Englishman John McGuinness, who set the pace on a Yamaha at 125.04.

Ballymoney's Adrian Archibald was third quickest at 122.93 while Bruce Anstey was fourth and Martin Finnegan fifth.

Farquhar topped the supersport times while Archibald was best in the superstock class.

Archibald's 121.90 was two seconds clear of fellow Northern Ireland rider Richard Britton in the superstocks, with Anstey back in third.

Farquhar's lap speed of 120.97 in the supersport was over a second ahead of second placed McGuinness while Finnegan was third.

The riders will be back out on the circuit on Tuesday evening for another practice session.