Piston rings for IZH Planeta motorcycles, 72.0 mm diameter: the factory size for a cylinder that has not been rebored.
- Replace them when compression drops, starting is difficult, or power is lost, and during a piston group repair.
- If the cylinder has been rebored, you need oversize rings for the new piston.
- Before installing them, check the ring end gap in the cylinder.
The IZH engine is a 2-stroke: the ring gaps must line up with the locating pins in the piston grooves.
