The Yasuni R is the premium evolution of the Yasuni Z, featuring a larger expansion chamber engineered for 70cc entry-level tuning cylinders while remaining compatible with 50cc powerplants.

Ideal for riders transitioning between displacement classes, it delivers responsive mid-range performance with peak output around 10,000 rpm. Dual rubber-mounted stainless steel brackets eliminate vibration for a smooth, refined ride. Street-legal restrictors in the header and silencer maintain homologation — remove them to unleash full performance potential. 

The exhaust produces a distinctive, aggressive tone with a broad power band. Interchangeable end silencers let you customize aesthetics to match your scooter, while spring-mounted design (borrowed from high-end racing systems) virtually eliminates leaks. For optimal results, pair with a minimum 17.5mm carburetor and tuning CVT.

• Sheet steel body
• Stainless steel bracket
• Aluminium silencer in blue
• Road-approved for Minarelli horizontal engines including Yamaha Aerox, Jog, Malaguti F12/F15, and compatible models.