The Yasuni R exhaust for Minarelli horizontal engines — here in the version with a black silencer — offers an excellent balance between everyday usability and racing performance. Positioned between the Yasuni Z and the Yasuni C16, the Yasuni R is a true all-round performer with a broad power band. It’s perfectly suited for 50cc and 70cc sport or mid-race setups and remains one of the top choices for 70cc tuning enthusiasts.
To reduce vibrations, the stainless steel mounting bracket is double rubber-mounted, providing outstanding stability and durability.
For street-legal use, the Yasuni R comes with restrictors in both the headpipe and silencer. When installed on a stock cylinder, performance stays close to the original exhaust but with a deeper, sportier tone. Removing the restrictors (for racing purposes) unlocks the exhaust’s full potential — but voids its road approval.
Summary :The Yasuni R combines a wide power range with a deep, sporty sound while maintaining a surprisingly quiet tone. The silencer can be swapped out to customize the look, and the spring-mounted joints ensure a leak-free connection — a feature typically found on high-end racing systems.
To fully exploit its performance, we recommend pairing it with at least a 17.5mm carburetor and a tuning CVT setup.
Technical specifications :
- Exhaust body : Sheet steel
- Bracket : Stainless steel
- Silencer : Aluminum (black)
- Street-legal with homologation / E-pass
- Compatible with Minarelli horizontal engines (Yamaha Aerox, Jog, Malaguti F12 / F15, and others)
