This 3HB-E1311-20-00 cylinder piston rings kit is engineered to restore performance and compression in compatible Yamaha 115cc engines. The set includes high-quality piston rings sized for a 54mm cylinder bore, designed to meet the specifications of models like the RX, RXS, and RX-Spesial. Manufactured for durability and precise fit, these components are essential for engine rebuilds and top-end overhauls. Ideal for mechanics and DIY enthusiasts, this kit provides a reliable solution for addressing worn rings, loss of power, or excessive oil consumption. It offers a cost-effective way to renew your engine's sealing capability and efficiency. Ensure your motorcycle's model and displacement match before purchase for correct application. Sourced from a trusted supplier, this kit represents a practical investment in maintaining the longevity and power of your Yamaha two-stroke engine.