The Genuine Porsche Engine Piston Ring Set - 9A110305002 is a set of piston rings designed specifically for Porsche engines. These rings are made from high-quality materials and are designed to fit perfectly into Porsche engines. They help to create a tight seal between the piston and cylinder walls, allowing for efficient combustion and maximum power output. This set includes all of the necessary rings for a complete engine rebuild or replacement. With these Genuine Porsche Engine Piston Rings, you can ensure the optimal performance and longevity of your Porsche engine.