The rings are priced per piston. We stock a range of Japanese produced replacement piston rings for Wiseco. Je, and MTC big bore 4 stroke piston kits.for Kawasaki,Honda,Suzuki and Yamaha. we need the bore size in mm and the ring type, usually XC, XG or XA. These markings are either found on the piston crown or the original packaging. we can also help identify the ring type by measurement.