The Yasuni R exhaust system is a further developed version of the Yasuni Z and features a larger resonance volume as well as a wider cone. It was developed for midrace engines and is designed for a wide usable RPM range.

The enlarged resonance chamber and the adjusted manifold diameter are suitable for numerous 50 to 70cc midrace setups. The high-quality workmanship and the attachment of the rear silencer with sealing rings and springs ensure a precise and durable installation.

Many Yasuni R exhaust systems have homologation and are delivered with a restrictor. Depending on the version, proof is provided via an E-mark on the exhaust or rear silencer; a separate ABE is often not included.

Technical Data

• Model: Scooter R
• Engine Type: 2-stroke
• Suitable for: 50–70 ccm midrace and sport cylinders
• Attachment: Rear silencer with springs and sealing rings
• Approval: E-approval

Vehicle Compatibility and Model-Specific Information

• Derbi Atlantis, Hunter, Paddock (E-approved for this model)

Approval Information for Germany and the European Union

• With R92-EU type approval according to ECE regulation (E-mark / E-expert opinion).

This Yasuni exhaust system has an embossed E-number and an "e-pass". Street legality in Germany and within the European Union exists only if the silencer is mounted according to the manufacturer's specifications and operated unchanged.

The approval applies exclusively to the European market, particularly for Germany. Use outside the European Union may be subject to different national regulations.

Attention: Even in case of technical compatibility, the approval applies exclusively to the vehicle models marked as "approved" above.

About the Manufacturer Yasuni

For over 40 years, Yasuni has stood for high-quality exhaust systems and innovative exhaust systems for scooters and motorcycles. The renowned manufacturer develops powerful sport and resonance exhaust systems that impress with precise workmanship, high fitment accuracy, and optimal power delivery.

Thanks to continuous research, modern manufacturing technologies, and high-quality materials, Yasuni exhaust systems meet the highest demands for performance, durability, and quality. Depending on the model, they are suitable for everyday use, sporty street use, or racing, combining maximum performance with current environmental and noise regulations.