The product is a vintage Yamaha TT500 XT500 cylinder head valves assembly from 1980, made of aluminum and originating from Japan. It is designed for 4-stroke engines and includes the OE/OEM part number 2h0-11110-00-4 and manufacturer part number 2Y0-11101-01-00. This ready-to-use cylinder head is specifically for Yamaha TT500 and XT500 models, offering a fresh and reliable option for motorcycle enthusiasts looking to restore or upgrade their engines.