With this set of 2-Stroke 100cc Piston Rings, you will get your motorized bicycle up and running in no time. Made of various metals and ready for the track and the street, this set of piston rings will sit perfectly in the piston of your favorite 100cc engine and help give your cylinder properly lubricated and running smoothly for miles to come. Located on the piston and coming into contact with the cylinder body, the rings are compressed onto the piston during installation. During operation, these rings help seal the combustion chamber, improve heat transfer and even regulate engine oil consumption. Make sure you have a pair of these piston rings handy the next time you're repairing or upgrading your engine.
I got it from Warehouse part of the 100cc piston ring set. Everything is ok. great!