Yamaha Motor Company 5X3-11611-00-00 Piston Ring

The Yamaha 5X3-11611-00-00 Piston Ring is a genuine Yamaha compression ring designed to seal the combustion chamber and regulate oil within the piston assembly for Yamaha motorcycles and small-engine platforms. Constructed from hardened steel or cast iron alloy, it installs in the piston groove as the primary sealing ring to minimize blow-by and support efficient combustion during top-end rebuilds and routine maintenance. As an OEM Yamaha replacement component with model-specific fitment, it is commonly used in Yamaha engine assemblies, with common replacements including 5V7-11611-00-00, 2HX-11611-00-00, and 4GB-11611-00-00.