Yasuni sports exhaust system for 50cc cylinders. Yasuni is always striving to provide the perfect aftermarket exhaust solution. The Yasuni Z is as a scooter exhaust, specially-designed for 50cc engines, which is extremely powerful and pretty much leaves all similarly designed exhaust in its wake. Of course, the Z also runs very well on 70cc engines, but is the right choice for those who do not have a 70cc kit. This exhaust system is chrome-plated and equipped with a high quality black anodised silencer. All parts required for installation are included. Fits Piaggio engines.