RK Upgrade Kit For ZX10 ZX1000 B1-B3 Tomcat 530 Chain Conversion 88-90 November 27, 2023 admin Kawasaki: ZX10 1000B1, ZX10 1000B2, ZX10 1000B3. 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. This includes Republic Of Ireland.