Exhaust Yasuni Cross ML Max Black & Chrome Beta RR-T / Rieju SMX

YASUNI Cross ML

The Spanish brand was originally known in MotoGP, when two-strokes dominated the discipline. However, Yasuni has now also gained an excellent reputation for their exhausts for 50cc supermotos, which includes the Yasuni Cross ML.

The "Cross" exhaust from Yasuni is a high-mount exhaust. The ML is the sports version of the Cross.

PERFORMANCE YASUNI cross ML

The Yasuni Cross is powerful and high-torque, especially in the medium rpm range. It is primarily intended for original cylinders and 50cc to 70cc entry-level tuning cylinders.

To fully utilize the performance of the Yasuni Cross, we recommend using a 19 - 21mm carburetor and a reinforced clutch to prevent slipping when starting off.

If you absolutely want a Yasuni exhaust, but have a setup with a very large displacement or very high performance, you should opt for the low-mount tuning exhausts from Yasuni: Yasuni R2, R3, R4...

Exhaust scooter, moped, motorcycle

The exhaust has a major influence on the performance of scooters and mopeds. By replacing the original with a tuning exhaust, you can improve the gas flow and increase the engine power.

exhaust parts

• The headpipe or header is the connection between cylinder and exhaust, and an exhaust gasket provides the necessary seal. In street-legal systems, the headpipe is equipped with a legally required restriction. Some people remove this restrictor to increase power.
• The actual exhaust body or expansion chamber is connected to the header pipe. In a classic 2-stroke expansion chamber type exhaust, gas pressure waves are used to improve engine performance.
• At the end there us the silencer or muffler that discharges the exhaust gases and, with the help of damping wool, also reduces the noise generated by the vehicle.

Replacing the exhaust

For 2-stroke engines, various settings and components usually need to be adjusted when the original exhaust is replaced with a tuning version. These changes include:

• Adjusting the carburetor by replacing the main jet.
• Upgrading the clutch or replacing the clutch springs.
• For scooters, it may be necessary to reduce the weight of the variator weights.

Tuning Level: Sport

We categorize our products into different performance levels  Original, Sport, Racing and High End , so that our customers can choose the right parts for their setup. It is really important to combine parts that belong to the same tuning level, this is especially true for cylinders, crankshafts and exhausts.

The products listed under Sport yield better performance than Original parts. They may have technical differences, such as the use of higher quality materials, a larger displacement or a performance-enhancing design. They are suitable for everyday use and have a long service life.