In commemoration of the World Champion, the special model “O.S.SPEED B21 Ongaro W.C.” will be introduced as a special model with the parts changed to those used when winning the World Championship.
O.S. SPEED B21 Adam Drake Edition 3 (AD3) is developed in collaboration with O.S. Speed. By adopting a boost bypass processing for the crankcase, the engine runs more smoothly, and making it even easier to drive.
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