Piston rings for Honda ZX scooters. They seal the gap between the piston and the cylinder, transfer heat from the piston to the cylinder walls, and limit the amount of oil that gets into the combustion chamber.
Signs of worn rings: the engine lacks power, starts worse when hot, and uses more oil than usual. The +1.0 mm size is an oversize (repair) size: it is used when the cylinder has been rebored for an oversize piston.
- Install new gaskets and seals.
Manufacturer: KOSO.
