WISECO replacement ring set (XA) - Motorcycle & ATV 4 stroke. XA ring sets consist of top ring, compression ring & oil ring. * Top ring: Chrome-faced high temp steel alloy (.8mm) * Compression ring: Taper-faced ferrox coated ductile iron (.8mm) * Oil ring: 3-piece low tension ring (1.5mm) Please note: Only WISECO replacement ring sets may be used on WISECO pistons. The ring type and bore size (in mm) is stamped on the dome of the piston. Refer to this information to order the correct replacement rings. Ring styles cannot be interchanged