HRF-classes

SS1300 -class cars are from the former up to 1300cc Special Saloon class, which had an own Finnish Championship series in its time. Now in HRF's races they race with the van Diemen SR Sport cars as a separate class.

Only the cars that have a race history in the Finnish Special Saloon series before 1996 are eligible. Super Saloon rules, including the weight limitations, from 1996 are used with few exceptions: Rear wing must not reach horizontally over the body line and also the seat, seatbelts and fire extinquisher must be according to today's requirements.