The new generation of 50cc cylinder sport exhaust system. Yasuni is always striving to provide the perfect system for the respective application. The Yasuni Cross MAX is as a moped exhaust. Specially designed for 50cc engines, this system is powerful and a light version of the Cross HM and is kind on the wallet. Of course, the cross-MAX also runs very well on 70cc engines, but this is not the ideal fitment. Headers including the cylinder in motocross style. The overview on Figure 2 helps to assess the fitment of ​​Yasuni Cross MAX exhaust system. This tuning exhaust is equipped with a high-quality, aramid reinforced carbon fiber silencer. All parts required for installation are included. Fits different Derbi Senda and Bultaco models. 28mm diameter outlet