Upgrade your KX500 (1983 - 1985) with this genuine Kawasaki rear spring adjust nut. Made in Japan with original equipment (OE) specifications, this part has an OE/OEM part number of 92015-1239 and a manufacturer part number of 92015-1239. Ensure the performance and safety of your motorcycle with this high-quality, durable part. Purchase with confidence knowing you are getting a genuine Kawasaki product.