Description
Polini Piston "Sport" 70cc d=47mm / piston pin=10mm Yamaha BW's / Slider, spare piston for Polini Sport 70cc cylinder for China-based 2-stroke / Minarelli engines. We carry a huge selection of tuning and spare parts by Polini, well-known scooter and moped expert from Bergamo in Northern Italy.
- for Polini Sport 70cc cast iron, 47mm bore
- incl. pin, rings and circlips
- fits Chinese 2-stroke scooters / Minarelli / Honda Lead + Peugeot SC50 / Metropolis
When to replace the piston?
To find out when the piston on your motorcycle, scooter or moped needs to be replaced, it's best to check your bike's manual. You can also keep an eye out for certain symptoms such as loss of compression, loss of power or oil consumption (only for a four-stroke piston).
Extending Piston life
To extend the life of the piston and reduce cylinder wear, it is recommended that you replace the piston rings on an alternating basis. This method maximizes piston life and improves engine performance.
It is important that you replace cylinder gaskets and piston circlips each time you disassemble the cylinder and piston. Failure to do so can result in oil leaks and engine damage.
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.