Heavy Tuned: Cheap spareparts for Scooter, Bikes, Motorcycles & Vespa
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Yasuni: Passion for Performance - Premium Exhaust Systems

Discover Yasuni, the leading Spanish manufacturer of high-quality exhaust systems and other tuning parts, specifically designed for scooters and motorcycles to elevate your driving dynamics and performance to a new level.

Market Leader in 2-Stroke Exhaust Systems

As the market leader in 2-stroke exhaust systems, Yasuni offers tailored solutions for over 40 models from more than 20 brands.

TopExhaust Systems
Yasuni Scooter R and Scooter Z Exhaust Systems
Yasuni Scooter R Auspuff
  • Yasuni R Exhaust: A Midrange Masterpiece Designed specifically for the midrange segment, the Yasuni R exhaust features an expanded resonance chamber and header diameter, compatible with popular midrace cylinders.
  • Unmatched Quality and Performance The Yasuni R offers a broad, usable RPM range with impressive power gains, all thanks to its excellent craftsmanship and precise tuning by Yasuni.
  • Street Legal Many Yasuni R exhaust systems come with a European emission standard (E-Pass) and are approved for public road use, a rare feature for a purebred racing exhaust.
  • The Perfect Middle Ground The Yasuni R exhaust is the ideal choice for those seeking a balance between the Yasuni Z and Yasuni C16 models, offering the best of both worlds.

What is the difference between Yasuni R and Yasuni Z?

The Yasuni Scooter Z is optimized for original or lightly tuned 50cc engines. However, it also provides good performance on 70cc Sport cylinders.
The Yasuni Scooter R is mainly designed for 50cc Sport/Racing cylinders or 70cc engines.

Both types are street legal.

Yasuni Scooter Exhausts
Yasuni Carrera Exhaust Systems
  • For Every Application: There are different models in the Yasuni Carrera series, ranging from the sporty Carrera 16 to the high-end Carrera C31 model for heavily tuned engines.
  • Powerful Racing Exhaust Systems: They are specifically designed for racing purposes.
  • Premium Quality: Yasuni is known for manufacturing exhaust systems of the highest quality that meet the demands of the racing industry.
  • Carrera 16.07 with Street Legal Certification: The Yasuni Carrera 16.07 is the only Carrera exhaust system with street legal certification, making it suitable for both track and street use.
  • Popular in the Racing Community: The Yasuni Carrera exhaust systems are highly popular among racers and tuning enthusiasts due to their outstanding performance.
Carrera Exhausts
Yasuni Carrera C21 Auspuff
Yasuni ECO Exhaust Systems
Yasuni ECO Auspuff
  • The Wolf in Sheep's Clothing! The Yasuni ECO series is a sports exhaust system with an original appearance.
  • Top-notch Craftsmanship: The ECO exhaust systems impress with their excellent craftsmanship.
  • Extremely Precise Fit: The exhaust systems are precisely engineered and fit perfectly on your vehicle.
  • Sleek and Stylish Tip: The ECO exhaust systems feature a simple yet appealing tip design.
  • AP04 Steel: Constructed from high-quality steel and coated in black for increased durability.
  • Performance: When restricted, the ECO exhaust systems comply with the original exhaust system. In racing applications, the restrictor can be removed to unleash its full performance.
  • Street Legal: The Yasuni ECO exhaust systems are street legal.
Yasuni ECO Exhausts
Frequently Asked Questions about Yasuni Exhaust Systems
  • Which variator weights should I use?

    It is recommended to use variator weights that are 1.0-1.5 grams lighter than the stock weights. This improves acceleration and optimizes the performance of Yasuni exhaust systems.

  • Which clutch springs are recommended?

    Use harder clutch springs to achieve an engagement RPM of approximately 5500-6000. This improves acceleration.

  • What should I do if the engine doesn't respond to throttle?

    If the engine doesn't respond to throttle after installing a Yasuni exhaust system, adjusting the main jet in the carburetor may be necessary. Increase the main jet size by about 10 percent to ensure sufficient fuel delivery.

  • How do I maintain my Yasuni exhaust system?

    Protect your Yasuni exhaust system from corrosion by thoroughly degreasing it and then sealing or painting it with a heat-resistant clear coat (800°).

  • How do I install a Yasuni exhaust system?

    First, remove the old exhaust system. If you encounter difficulties in loosening the screws and brackets, use rust remover. Note that the old screws often have low torque tolerance and can easily break.

  • What should I know about the Yasuni R / Z restrictor?

    The Yasuni exhaust is designed to comply with the maximum allowable speed of the vehicle. If the exhaust is intended for competition purposes, the performance restrictions can be removed.

  • Removal of the header restrictor:

    At the inlet of the perforated tube, facing towards the flange, you can see the restrictor in the form of a slotted metal sleeve. To remove it, both welding points must be ground off, then the sleeve can be easily pulled out. Please note that this voids the street legal certification.

  • Are there spare parts available for Yasuni exhaust systems?

    Yes, we offer common spare parts for most Yasuni exhaust systems directly on the product page. If you cannot find a specific spare part, please contact us, and we will be happy to assist you.

  • Do I need to go to the TÜV (Technical Inspection) after installing a scooter exhaust system with an E number or ABE number?

    No, scooter exhaust systems with an E number or ABE number are already approved for road use. You do not need to schedule an additional TÜV appointment after installation.

  • Which Yasuni exhaust should I use for which engine/setup?
    • For replacing the stock exhaust and cylinder, we recommend the Yasuni ECO or Yasuni Scooter R.
    • For 50cc sport and 70cc sport cylinders, the Yasuni Scooter R and Yasuni Scooter Z are suitable.
    • For 70cc midrace cylinders, we recommend the Yasuni R or the Carrera 16, Carrera 16.07, and Carrera C models.
    • For 70cc to 80cc high-end cylinders, the Yasuni Carrera models 20-21 and 21-31 are recommended.
Yasuni Spare Parts