Carefully developed for the highest level of qualityReady to serve reliably for years to comeRigorous quality control and great functionality Ring Set by Wiseco®. Piston rings are made by OEM factories to exact specifications. Wiseco uses well known brands like Rikken Japan, TP and NPR to be sure you will get the quality you might expect from brand. All Wiseco piston rings can be used in cast iron bores, nickel ceramic platings (Nikasil), boron composite and electrofusion bores. If the application has a OEM cylinder with chrome bores, Wiseco supplies a different piston ring as in the Wiseco piston kit.