Doppler Exhaust GP8.0 Beta RR / Rieju RR / MRT (left high mount)
Description
Exhaust Doppler GP8.0 CE Rieju MRT / Beta RR. The GP8.0 exhaust from Doppler is basically the result of Doppler taking their WR7 to the next level. Like most tuning exhausts, the body is hand-welded and protected by a layer of clear paint and comes with a black silencer (250mmx70mm).
In terms of performance, the exhaust offers very good acceleration and can be combined with 50cc racing engines or 70cc / 80cc sport / midrace engines. We recommend to use a 19 mm or larger carburettor to take advantage of its full potential.
- for Rieju MRT / Beta RR
- high mount, left side
- CE-marking / street-legal
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.
