Yamaha Motor Co., Ltd. 2VE-11630-F1-00 Piston Kit

The Yamaha 2VE-11630-F1-00 piston kit is a genuine OEM two-stroke motorcycle component designed to restore compression and engine performance in Yamaha YZ80 engines from approximately 1991–1992. The kit includes the piston, rings, pin, and clips and uses an aluminum alloy piston with steel rings, configured as a 2nd oversize of about +0.50 mm. It is intended for two-stroke gasoline engines and requires the cylinder bore to be matched to the oversize piston to ensure proper seal and clearance. Used in motorcycle engine rebuilds and repairs, it supports restoration of compression and combustion efficiency, supporting performance recovery in small-displacement motocross applications and other racing or restoration projects. Common replacements include Yamaha 2VE-11630-A1-00, 2VE-11630-E1-00, and 2VE-11631-00-94. Origin: Genuine Yamaha component, OEM part, often discontinued or with limited availability.