RK Upgrade Kit Yamaha YZF 1000 R Thunder Ace – 530 Chain Conversion (4SV, 4VF) 96-02. Terms and conditions apply. RK OE upgrade chain and sprocket chain and sprocket kits contain a heavier duty RK chain than that supplied as OE on the motorcycle when new. They are supplied with high quality steel sprockets. Sorry, our items are NOT available for pick-up. No additional information at this time.