Wiseco ring compressor sleeves save your rings! Installing thin high performance oil rings can be difficult. Their sleeves compress piston rings smoothly and evenly to prevent bent and broken rings. These ring compressor sleeves are machined from Wiseco sleeve forging to ensure toughness, and they are hard-anodized and Teflon®-coated for low friction and prolonged wear resistance. Plus, since these sleeves are designed with a smooth radius that tapers down to the specific bore size, your installation of any piston is a breeze! Choose high-quality sleeves that make your engine work easier–Wiseco tapered ring compressor sleeves.