Diamond Pro Select 09244155 - Advanced Profiling Steel Piston Ring Set .043" x .043" x 3/16", 4.155" Bore

The Diamond Pro Select / Total Seal AP Advanced Profiling Piston Ring Sets are Highly Recommend for Applications using Moderate to Extreme Power Adders including Nitrous. These Piston Ring Sets include a AP Steel Top Ring that has been coated using Total Seal's PVD Applied C-33 Chromium Nitride (CrN) Anti-Friction Coating. The C-33 Coating is easy on cylinder walls while the Steel Top Ring still  has the ability to handle extreme pressures. Napier Cut 2nd Ring are Standard for extreme oil control. 3 Piece Stainless Oil Control Rings are Standard.