The Lansdowne Race Classes Explained
The Lansdowne British Championship (Class 11a)
For pre 1964 500cc Group 1 racing motorcycles either original or replica but in a very period original specification. Thus, original sized wheels, exhaust systems, carburettors and so on are required plus the appearance of the bike must be very much in keeping with bikes which raced in the period. The front and side number plates should be black numbers on a white background.
The Lansdowne Clubman’s 500cc Championship (Class 11b)
For pre 1964 Group 1 500cc racing motorcycles either original or replica in original condition but with permitted period type modifications. So, for example, such bikes are allowed different sized wheels, exhausts, carburettors and so on as long as such modifications were used in period. Such modifications will be subject to a handicap system similar to that used in the Lansdowne Classic Series for a number of years. The front and side number plates should be black numbers on a yellow background.
The Lansdowne Avon 350cc Championship (Class 11c)
For 350cc machines to the same specification as the Clubman’s 500cc Championship. Front and side number plates should be white numbers on a blue background.
The 2023 Lansdowne pre ‘55 Championship (Class 11d)
This is a fairly new class for the Lansdowne Series and shares regulations with the very successful 50’s spec races at the Goodwood Revival. This class is for very original pre-1954 Group 1 type bikes and pre-1955 Group 2 bikes. The Lansdowne Series was inspired by the Revival from the start, so this is continuing a tradition. The front and side number plates should be white numbers on a red background.
Occasionally we allow competitors to run machines that are appropriate but may not be applicable to any of the championship classes.