O.S. Piston Ring 200 SurpassTower Stock# OSMG7827 • Manufacturer Stock# 44503400
Notes from our tech department:
O.S. Max FS-200S 2.0 4-Stroke Ringed Engine.
This is located on the piston and seals it against the cylinder wall.
One Piston Ring
Assembly onto piston
Diameter: 39.5mm (1.56")
For the replacement cylinder sleeve use OSMG5377