CP Rings ONLY for S9818 and S9821 Piston Kits (Single Cylinder Set)

These are the CP Pistons Piston Rings, specifically designed to work with their S9818 and S9821 piston kits. This set is for a single cylinder application, meaning you get the exact rings needed for one piston. They are a well-made replacement part for when you're rebuilding or refreshing an engine and need to ensure a proper seal between the piston and cylinder wall.

When you're putting together an engine, the piston rings are critical for performance and longevity. They control oil consumption, transfer heat from the piston to the cylinder wall, and provide the primary seal for combustion pressure. These rings are made to CP Pistons' specifications, ensuring they match the intended piston profile for a reliable seal. It's important to use the correct rings for your specific piston kit to avoid issues like blow-by or excessive oil burning.