Twin or 4 cylinders, these are the two main architectures that have been used in sports bikes for a long time. Yamaha’s approach for its new small sports bike is quite different and not lacking in originality.
The idea is to offer a machine with a taste for sport, with honourable performances but without costing too much. Interesting, isn’t it?
From there, the SZR 660 was born, whose chassis is closely derived from the dynamic TZR 250 (only sold in Japan). The big surprise comes from the engine: it is a single cylinder. Yes, it’s surprising… It’s true that this choice may seem strange. But, if you think about it, a single cylinder engine is by definition a characterful engine, which gives the rider good shocks but also a good power available very early.