{"product_id":"rk-520-mxu-uw-ring-sealed-racing-chain-114-links-125cc-500cc","title":"RK 520 MXU UW-Ring Sealed Racing Chain – 114 Links | 125cc–500cc","description":"\u003ch2\u003eRK 520 MXU Sealed Racing Chain – 114 Links\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eRK 520 MXU UW-Ring sealed racing chain\u003c\/strong\u003e is the lightest sealed-ring chain on the market, purpose-built for high-speed motocross and off-road racing. At just \u003cstrong\u003e3 lbs per 100 links\u003c\/strong\u003e, it delivers a measurable weight advantage without sacrificing tensile strength or durability — critical for competitive riders running 125cc to 500cc engines.\u003c\/p\u003e\u003cp\u003eRK's proprietary \u003cstrong\u003eUW-Ring seal technology\u003c\/strong\u003e locks in lubricant and blocks out dirt, mud, and moisture, dramatically extending chain life compared to standard O-ring chains. The result: consistent power transfer lap after lap, with less maintenance between races.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLightest sealed-ring racing chain available — optimized for weight-sensitive race builds\u003c\/li\u003e\n\u003cli\u003eUW-Ring seal design retains lubrication and resists contamination\u003c\/li\u003e\n\u003cli\u003eHigh tensile strength engineered for demanding 125cc–500cc racing applications\u003c\/li\u003e\n\u003cli\u003eIncludes clip connecting link for fast, secure installation\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 520 sprocket setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e RK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e GB520MXU-114\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain Size:\u003c\/strong\u003e 520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinks:\u003c\/strong\u003e 114\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.61 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Type:\u003c\/strong\u003e UW-Ring (sealed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Range:\u003c\/strong\u003e 125cc – 500cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnecting Link:\u003c\/strong\u003e Clip type (included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarcode (UPC):\u003c\/strong\u003e 681319461685\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you're prepping for race day or replacing a worn chain mid-season, the RK 520 MXU delivers the performance, reliability, and weight savings that serious riders demand.\u003c\/p\u003e","brand":"RK","offers":[{"title":"Default Title","offer_id":47762812567793,"sku":"GB520MXU-114","price":202.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/1348\/7857\/files\/153252.png?v=1770105200","url":"https:\/\/howlingmoto.com\/products\/rk-520-mxu-uw-ring-sealed-racing-chain-114-links-125cc-500cc","provider":"Howling Moto","version":"1.0","type":"link"}