A set of piston rings, 43.00 mm in diameter, for 2-stroke scooters with a belt-driven variator. The rings seal the piston in the cylinder: they hold compression and keep oil out of the combustion chamber. Manufacturer: KOSO.
Replace the rings if compression has dropped, the engine starts poorly, oil consumption has gone up, or bluish smoke comes from the muffler. The +0.50 in the name indicates the oversize: for a cylinder bored for a larger piston diameter. Choose by piston diameter.
