Swiss Auto 250
The Swiss Auto 250 from Aim Motor Sport
The Swiss Auto 250 is a purpose built 4 stroke racing engine designed specifically for karting. In terms of performance and reliability the Swiss Auto has few rivals.
And for those of you who believe 4 stroke kart engines are too heavy and lack power, we have some shocking news - The Swiss Auto in standard configuration develops more horsepower than a Rotax max and weighs less when measured with all the necessary ancilliaries!!

