Michael Dunlop picked up another victory around the TT course to add to his four in June.
He comfortably won the Formula 1 race on his Team Classic Suzuki bike.
Dunlop was a minute ahead of Ramsey rocket Conor Cummins who picked up second.
Ryan Kneen filled the final podium spot after going ahead of Steve Mercer who came off at the Ramsey Hairpin.
In the Forumla 2 Castletown's Chris Palmer made it a duo of wins on the day.
He crossed the line first on his Rob Brew Racing Yamaha in a close fought race with James Cowton coming second and Phil McGurk third.
In a dramatic finish to the Formula Classic Dean Harrison cross the line 0.17 seconds ahead of Gavin Lupton, with Chris McGahan coming third.
Harrison lost 20 seconds on the last lap after the tank came loose on his bike near Ballaugh, but he managed to hold it together with his legs to pick up a victory at the Classic TT.
Harrison says it was a tough last lap: