{"product_id":"2018-ktm-390-duke-oem-rear-back-sprocket","title":"2018 KTM 390 DUKE OEM REAR BACK SPROCKET","description":"This rear sprocket is in good condition and shows normal signs of wear. Please view all photos closely for details. Thank you!\n\n45-tooth ring for 520-size chain (5\/8″ × 3\/8″); stock gearing with 14-tooth front yields a 3.21 final ratio.\n\nSAE 1023 carbon-steel blank, induction-hardened teeth \u0026gt; 50 HRC; corrosion-proof phosphate + black powder coat.\n\nSix mounting holes Ø 8.5 mm on 110 mm PCD, 64 mm centre bore — direct bolt-up to the KTM LC4c cush-drive carrier.\n\nThickness ≈ 6 mm, offset ≈ 3 mm; weight ≈ 1.10 kg.Fast Shipping\n                                    UPS\/USPS\n                                \n                                \n                                    \n  \n\n                                    30 Days\n                                    Hassle Free Return\n                                \n                                \n                                    \n  \n\n                                    Customer Service\n                                    Secure Payments\n                                \n                                \n                                    \n  \n\n                                    Only The Best\n                                    Brands","brand":"KTM","offers":[{"title":"Default Title","offer_id":42642334154819,"sku":"2025 KTM 7020 IP+TA K2-D4 18","price":27.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0559\/3176\/4803\/files\/1_c62e784a-0015-40ca-a700-9c1574f01204.jpg?v=1760762490","url":"https:\/\/goldrivermotorsports.com\/products\/2018-ktm-390-duke-oem-rear-back-sprocket","provider":"Gold River Motorsports","version":"1.0","type":"link"}