Now the two-stroke seems to disappear from the GP’s, these kind of motorcycles are seriously been treated. By this the technical development of the modern two-stroke is also coming to an end.In short there are a few reasons to keep them alive and rolling. The great attraction of the two-stroke is its enormous potential, contrasted with its simplicity. Just some simple adjustments make a big difference to his power output. This is what it makes so funny working with these machines. Have a look inside for more information, pictures and tips for two-stroke lovers. There is also a complete documentation from the early Yamaha Factory racers from the 60’s and 70’s and some other interesting machines.