{"product_id":"rk-excel-520so-104-o-ring-drive-chain-steel-520-x-104-links-by-rk","title":"RK EXCEL 520SO-104 O-Ring Drive Chain, Steel 520 x 104 Links by RK","description":"RK’s traditional round O-ring chain is a convenient blend of performance and affordability.  SO’s O-ring is constructed from Nitrite Butadiene to seal in lubrication and deliver smooth power with minimal seal ring drag or loss of horsepower. 520SO chains are suitable for low to mid-range CC motorcycles that came from the factory with sealed chains. 520SO can be used for both on street and off-road up to 400ccs. 520SO is available only in natural finish.\n\u003cp\u003eThe RK EXCEL 520SO-104 is a traditional round O-ring drive chain designed for dependable performance and value on low- to mid-range displacement motorcycles. Its nitrile butadiene O-rings help retain lubricant inside the chain while limiting seal drag, supporting smooth power transfer and consistent operation.\u003c\/p\u003e\u003cp\u003eSuitable for street motorcycles, off-road bikes, and ATVs up to 400cc, this steel chain is a practical replacement for applications originally equipped with a sealed chain. The natural finish provides a straightforward, durable appearance, while the included clip-type master link simplifies installation. Manufactured by RK, the 520SO combines everyday usability with the trusted engineering of RK EXCEL.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Suitable for low- to mid-range motorcycles, street use, off-road riding, and ATVs up to 400cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Steel drive chain with traditional round O-ring seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Material:\u003c\/strong\u003e Nitrile butadiene O-rings help retain lubrication and reduce seal-related power loss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTensile Strength:\u003c\/strong\u003e 6,900 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Horsepower:\u003c\/strong\u003e 60 horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster Link:\u003c\/strong\u003e Clip-type master link included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e RK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand and Part Number:\u003c\/strong\u003e RK EXCEL 520SO-104\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"RK EXCEL","offers":[{"title":"Default Title","offer_id":67738460881081,"sku":"691-1903","price":119.95,"currency_code":"USD","in_stock":false}],"url":"https:\/\/www.thespeedshopusa.com\/products\/rk-excel-520so-104-o-ring-drive-chain-steel-520-x-104-links-by-rk","provider":"THE SPEED SHOP USA","version":"1.0","type":"link"}