{"product_id":"dirtybike-surron-ultra-bee-primary-drive-rk-mxu-sealed-enduro-420-replacement-ch","title":"DirtyBike Surron Ultra Bee Primary Drive RK MXU Sealed Enduro 420 Replacement Chain","description":"\u003cp\u003eThe RK MXU sealed 420 chain, a direct replacement for all DirtyBike Ultra Bee 420 primary belt to chain conversion kits. The sealed construction is what suits it to enduro use: the seals hold lubricant in the pin and bush at each link, so the chain keeps its length far longer in mud and water.\u003c\/p\u003e\u003cp\u003eChain pitch is 420, the chain is by RK, and it is sold as a single item at 0.81 lb shipping weight. Verified against the Surron Ultra Bee. DirtyBike also lists a non-sealed MXZ race chain for lower drag. Replace the sprockets with the chain if the old one has stretched past its limit.\u003c\/p\u003e","brand":"DirtyBike","offers":[{"title":"Default Title","offer_id":54486759276854,"sku":"UB-PC-420-RK-MXU-48-G","price":38.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3080\/9398\/files\/Surron-LBX-db-420RK-chain-kit_9c154b2b-6079-4daa-b7fc-2d7496729052.jpg?v=1788105188","url":"https:\/\/motorhabit.com\/products\/dirtybike-surron-ultra-bee-primary-drive-rk-mxu-sealed-enduro-420-replacement-ch","provider":"MotorHabit","version":"1.0","type":"link"}