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 setups.

Perfect for riders transitioning between displacement classes, it delivers responsive mid-range power with peak output around 10,000 rpm. Dual rubber-mounted stainless steel brackets eliminate vibrations and ensure rock-solid stability. Street-legal restrictors in the header and silencer maintain homologation — remove them to unleash full performance potential. 

Built for attitude, the Yasuni R produces a distinctive, aggressive exhaust note with a broad power band. Interchangeable end silencers let you customize the look to match your scooter. Spring-mounted silencers — borrowed from high-end racing systems — virtually eliminate leaks. For optimal results, pair with a minimum 17.5mm carburetor and tuning CVT. 

Sheet steel body

Stainless steel bracket

Aluminium silencer (Orange)

Road approved / homologated

Fits : Minarelli vertical (Yamaha Slider, BWs, and similar)