{"product_id":"rk-excel-520so-116-520so-steel-o-ring-drive-chain-116-links","title":"RK EXCEL 520SO-116 520SO Steel O-Ring Drive Chain, 116 Links","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-116 is a traditional round O-ring drive chain designed for low- to mid-range displacement motorcycles and ATVs. Built in the 520 chain size with 116 links, this steel chain is suitable for street and off-road applications up to 400cc when the vehicle was originally equipped with a sealed chain. Its natural finish provides a practical, durable solution for everyday replacement and maintenance needs.\u003c\/p\u003e\u003cp\u003eThe RK EXCEL 520SO uses O-rings made from nitrile butadiene rubber to help retain factory-applied lubrication between the pins and bushings. This construction supports smooth power delivery while reducing friction, seal drag, and lubricant loss. With a rated tensile strength of 6,900 pounds and support for applications producing up to 60 horsepower, the chain is well suited to compatible motorcycles and ATVs used for commuting, recreational riding, and moderate off-road operation.\u003c\/p\u003e\u003cp\u003eInstallation is supported by the included clip-style master link. Verify that your motorcycle or ATV requires a 520-size, 116-link sealed chain and confirm the manufacturer's fitment specifications before installation. The RK EXCEL manufacturer part number is 520SO-116, and the vendor part number is also 520SO-116.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSize: 520 chain size with 116 links\u003c\/li\u003e\n\u003cli\u003eModel: 520SO sealed O-ring drive chain\u003c\/li\u003e\n\u003cli\u003eBrand: RK EXCEL\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 520SO-116\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 520SO-116\u003c\/li\u003e\n\u003cli\u003eConstruction: Steel chain with nitrile butadiene O-rings\u003c\/li\u003e\n\u003cli\u003eFitment: Low- to mid-range motorcycles and ATVs originally equipped with sealed chains\u003c\/li\u003e\n\u003cli\u003eApplication Rating: Suitable for street and off-road use up to 400cc\u003c\/li\u003e\n\u003cli\u003eHorsepower Rating: Supports applications up to 60 horsepower\u003c\/li\u003e\n\u003cli\u003eTensile Strength: 6,900 pounds\u003c\/li\u003e\n\u003cli\u003eMaster Link: Clip-style link included\u003c\/li\u003e\n\u003cli\u003eFinish: Natural steel finish\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RK EXCEL","offers":[{"title":"Default Title","offer_id":67558399901931,"sku":"691-1908","price":91.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/6c00-6936f294b2e70_84e01432-2bb8-4dbd-abb6-ae7f86a91c5c.png?v=1790761239","url":"https:\/\/ctracingservices.com\/products\/rk-excel-520so-116-520so-steel-o-ring-drive-chain-116-links","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}