The Lightweight class features twin cylinder 650cc machines derived from middleweight road going motorcycles turned into racing machines by tuners and engineers with extensive performance adaptations for the challenges of the TT Mountain Course.

The Lightweight machines are the newest addition at the TT, with the best machines making around 90bhp. This class of racing requires pinpoint accuracy for a fast lap.

Class statistics
Races Bennetts Lightweight Race
Race Distance 4 Laps / 150.92 miles
Lap Record Michael Dunlop – 122.750mph / 18 minutes 26 seconds
Race Record Michael Dunlop – 120.601mph/ 1:15.05.032
Number Board Green background with white numbers
Manufacturers Kawasaki – Paton – Suzuki – WK Bikes - Norton