Lockwasher Sprocket Nut $ 3.90 SKU: 90215-21239 Lockwasher for sprocket nut. Back to: New Parts ×Close Yamaha Yamaha is a leader in businesses ranging from musical instruments and audio & video products to information technology products, new media services, home furnishings, auto components, specialty metals, music education and resort facilities. http://www.global.yamaha.com/ Description Suitable for all models 1988 onwards. Also suit all TZR250 3XV models. Also known as part number: 90215-21121