1.2 Multi-cylinder production based two strokes up to 400cc
5 Specifications for up to 400cc two stroke production based machines:
The machine must be based on a production motorcycle. No homologation is
necessary however the Road Race Commission or Technical Steward shall
have the power to rule whether or not a machine is eligible.
5.1 Capacity:
Must not exceed 400cc. Machines with re-bored cylinders must remain within the capacity limit.
5.2 Engine Specifications:
a) The crankcase must be from a road going motorcycle and may be examined to ensure compliance, but may be modified without further
restriction.
b) Any aftermarket or race piston and ring set may be fitted provided the cylinder remains within the capacity limit.
c) The original carburettor may be replaced by any brand or type
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