This Wiseco piston is the latest offering from 4P for the K20C1 engine platform. We have worked closely with Wiseco Engineers to further develop the K20C1 with this latest piston design. The focus of this effort was to bring a smooth edge design with the finishing details that Wiseco is famous for. This is an 86mm piston that will easily install into the factory block. It features a thicker top, thick wall tool steel wrist pin, a stronger pin boss area, and a special ring package specifically for this application. This is a lighter weight symmetrical skirt design with unique DI dish design. You will appreciate the design detail at first sight. The Saenz S-Series rod is perfect for handling the high peak torque and rpm range of the Civic Type R engine. Saenz S-Series Connecting Rods are made from 100% USA steel of the best quality. The S-Series rods are the perfect combination of performance and affordability. As with all Saenz rods, these undergo a rigorous quality inspection process and offer the best quality machine work. This is a complete set of 4 Connecting Rods and 4 Pistons with rings, locks, and pins. Nothing else is required. Email Luke@team4piston for International Orders