The piston has 2 additional CNC-milled oil grooves in the piston skirt, in which engine oil collects to improve the lubrication at the cylinder bore and the properties in emergency running. Especially for the sensitive running-in period of the cylinder, the piston was provided with an extra molybdenum coating. Through 2 oil holes and 1 groove in each of the bearing points of the gudgeon pin, this itself is better lubricated.

The cylinder of the kit offered here corresponds with its 39mm bore in power development and design exactly the original cylinder with 50cc and can therefore be operated legally in road traffic. Suitable for all 50cc GY6 China 4-stroke engines.

This cylinder kit is in price the significantly cheaper option than all original spare parts to purchase individually. In addition, the quality is significantly better than from Chinese manufacturers.

Delivery includes: Cylinder, piston, set of piston rings incl. oil scraper rings, gudgeon pin, seal set and circlips for the piston pin.