The Piston Ring Set includes both rings necessary for proper fit of the piston within the cylinder on 2-stroke motorized bicycle engines. They ensure optimal compression and smooth engine operation.

Installation Note: Align the marks on the piston rings with the tab in the piston ring journal for correct placement.

Dimensions:
Outer Diameter: 1.9 in / 48.6 mm
Inner Diameter: 1.77 in / 45 mm