46mm Cylinder Piston Ring Set For MS280 MS270 This piston ring set is designed for use with 46mm cylinder engines compatible with models MS280 and MS270.The set includes multiple rings that help maintain proper compression and reduce oil consumption within the engine cylinder.These rings are engineered to fit precisely into the piston groove and cylinder bore, performance during.Intended for replacement or repair applications, the set supports efficient engine function in outdoor power.Installation requires standard mechanical tools and familiarity with small engine components.