The OEM YAMAHA, NOT CHINEESE Clutch Boss Inner Hub for Yamaha Banshee 350 YFZ350 1987-2006 (Manufacturer Part Number: 1A0-16371-00-00) is a high-quality replacement part made from aluminum and metal materials. It includes mounting hardware and a clutch pressure plate, with a grey color finish. The hub is designed with 27 teeth and has a length of 131.5mm. Manufactured by Yamaha in Japan, this clutch hub comes with a 3-month manufacturer warranty and is compatible with specific Yamaha models. It is a reliable and durable component for maintaining the proper function of your ATV's clutch system.