Northwoods GP - Classes Information

F1 - 100cc air cooled, manual clutch 4 stroke, 111cc air cooled auto clutch 4 stroke, 50cc liquid cooled 2-stroke, 60cc air cooled 2-stroke

F2 - 136cc air cooled 4-stroke, 65cc 2-stroke

F3 - 151cc air cooled 4-stroke, 72cc 2-stroke

F4 - 85cc 2-stroke, 176cc air cooled 4-stroke

F5 - 105cc 2-stroke, 150 water cooled 4-stroke, 176cc air cooled 4-stroke