Yasuni R for Minarelli Horizontal engines.
Yamaha Zuma 02-11 Aprilia SR50 with Minarelli Engine.
The big brother of the Yasuni Z: thanks to a larger expansion chamber and wider downpipe diameter, the Yasuni R is the ideal complement for 70cc sport and racing cylinders. Yasuni has found a clever way to attach the rear silencer (with seal rings and spring). Silencer comes in black anodized aluminium, which looks very classy.