The product is a genuine Yamaha crankshaft nut designed specifically for Yamaha ATVs from 2001-2005. It is part of the sprocket assembly and is identified by the manufacturer part number 90215-21256-00. This high-quality nut is essential for maintaining proper chain tension and ensuring smooth operation of the ATV's transmission system. Made by Yamaha, a trusted brand known for producing durable and reliable ATV parts, this crankshaft nut is a reliable and essential component for your Yamaha ATV.

SI5