Polini Exhaust BIG Evolution 70cc
Sorry, this Item has been Discontinued
This product is no longer being manufactured, so unfortunately we can no longer offer it.
However, we would like to help you find an alternative. Please take a look at other products within the same category or contact us so we can help you with selecting the right product.
Description
The expansion chamber is made of thin sheet metal (rolled and welded), the silencer is made of aluminium (special Evo 2010 version). Designed to go with the same series' "Evo 2010" cylinder by Polini.
This racing exhaust is, as you would expect, particularly torquey and powerful at high rpm.
It is made to go with the aforementioned Polini cylinders/cylinder kits and is not compatible with any other cylinder, at least not without major modifications.
High-end, top-quality, excellent workmanship, flawless finishing - an exhaust that will live up to your highest expectations!
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: High End racing
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.
High End Racing products are exclusively designed for racing and should only be handled by tuning pros with the appropriate technical know-how. High-end racing parts often require modifications or machining of certain elements to accommodate the often larger components (larger crank webs, larger intake, etc.). Whether you stick with 50cc or increase the displacement, high-end racing parts offer much higher performance than the original parts and are the most powerful tuning parts.
Note: To ensure the reliability of the engine, it is important that the parts are compatible and that you do regular maintenance on your two-wheeler.
