{"product_id":"lifetime-warranty-678-speed-bike-chain-12-x-332-inch-116-links-with-preinstall-connector-antirust-bicycle-chain-for-mtbroadgravelcyclocross-bikes-compatible-with-shimano-sram-campagnolo","title":"[Lifetime Warranty] 6\/7\/8 Speed Bike Chain 1\/2 x 3\/32 Inch (116 Links) with Pre-Install Connector - Anti-Rust Bicycle Chain - for MTB\/Road\/Gravel\/Cyclocross Bikes - Compatible with Shimano SRAM Campagnolo","description":"\u003ch2\u003e6\/7\/8-Speed Universal Bicycle Chain with Pre-Installed Connector (116 Links)\u003c\/h2\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Speed Precision Geometry:\u003c\/strong\u003e Specifically engineered to provide smooth, consistent shifting for 6, 7, and 8-speed drivetrains, featuring optimized plate spacing to prevent chain suck and dropped gears.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Corrosive Nickel Plating:\u003c\/strong\u003e Treated with a specialized anti-rust finish that protects the steel core from oxidation caused by rain, mud, and road salt, ensuring a longer service life and reduced friction.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePre-Installed Connecting Link:\u003c\/strong\u003e Comes with a master link already attached or included, allowing for a fast, tool-free installation and easy removal for deep cleaning or drivetrain maintenance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmooth-Shifting Inner Chamfers:\u003c\/strong\u003e The inner and outer plates feature beveled edges (chamfering) that help the chain \"climb\" and \"drop\" between cogs more efficiently, reducing drivetrain noise and shifting hesitation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Tensile Strength Pins:\u003c\/strong\u003e Utilizes reinforced chromoly steel pins with a specialized riveting process, providing the durability needed for high-torque climbing and urban commuting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eReplaces \/ Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShimano Standards:\u003c\/strong\u003e CN-HG40, CN-HG71, CN-HG50, CN-UG51.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSRAM Standards:\u003c\/strong\u003e PC-830, PC-850, PC-870.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKMC Equivalents:\u003c\/strong\u003e Z8.3, Z7, X8 series.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecifications:\u003c\/strong\u003e 1\/2\" x 3\/32\" (Standard width for 6-8 speed), 116 Links.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eThis chain is a universal replacement for legacy and entry-level drivetrains across various cycling disciplines. Key compatible groupsets include:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShimano:\u003c\/strong\u003e Fits Tourney, Altus, Acera, and older Claris (8-speed) groupsets, as well as vintage 6-8 speed road and mountain bike systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSRAM:\u003c\/strong\u003e Compatible with X3, X4, and legacy 3.0 series mountain and hybrid drivetrains.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCampagnolo \u0026amp; SunRace:\u003c\/strong\u003e Works with vintage 8-speed Campagnolo and standard 6\/7\/8-speed SunRace cassettes and freewheels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBike Types:\u003c\/strong\u003e Ideal for mountain bikes (MTB), road bikes, hybrids, gravel bikes, and cyclocross setups utilizing 18, 21, or 24-gear configurations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e This chain is \u003cstrong\u003enot compatible\u003c\/strong\u003e with 9, 10, 11, or 12-speed systems, as those require a much narrower chain width.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChain Wear Reading:\u003c\/strong\u003e Use a chain checker tool; for 6-8 speed chains, replace once it reaches \u003cstrong\u003e0.75% wear\u003c\/strong\u003e to prevent the chain from prematurely wearing down your cassette and chainrings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e\"Ghost\" Shifting:\u003c\/strong\u003e If the chain jumps between gears or slips while pedaling under load, the internal rollers and pins are likely worn beyond their tolerance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVisible Rust or Stiff Links:\u003c\/strong\u003e Excessive oxidation or links that no longer pivot freely through the rear derailleur pulleys indicate the chain is nearing the end of its life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Mileage:\u003c\/strong\u003e Depending on riding conditions and maintenance, these chains typically last between \u003cstrong\u003e1,500 to 2,500 miles\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoud Drivetrain:\u003c\/strong\u003e A persistent \"dry\" or grinding sound that remains even after proper cleaning and lubrication.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChain Sizing:\u003c\/strong\u003e Do not use all 116 links unless required. Compare the new chain to your old one or use the \"Big-to-Big\" method (wrap the chain around the largest front and rear cogs without the derailleur and add 2 links) to find the correct length.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean Before Lube:\u003c\/strong\u003e **PRO TIP:** Wipe away the sticky factory packing grease with a clean rag before applying a high-quality, weather-appropriate bicycle lubricant for the best performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnector Orientation:\u003c\/strong\u003e Ensure the pre-installed master link is snapped fully into the \"locked\" position. You can do this by applying downward pressure on the pedal while holding the rear brake.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDerailleur Routing:\u003c\/strong\u003e Pay close attention to the routing through the rear derailleur pulleys. Ensure the chain does not rub against the metal tabs or cages of the derailleur.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCheck for Stiff Links:\u003c\/strong\u003e After installation, back-pedal several times to ensure the chain moves smoothly through the entire drivetrain without catching.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueStarsParts","offers":[{"title":"Default Title","offer_id":46495302123709,"sku":"AZ00135794","price":14.79,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2576\/7548\/files\/AZ00135794_1.jpg?v=1773213059","url":"https:\/\/bluestarsparts.com\/products\/lifetime-warranty-678-speed-bike-chain-12-x-332-inch-116-links-with-preinstall-connector-antirust-bicycle-chain-for-mtbroadgravelcyclocross-bikes-compatible-with-shimano-sram-campagnolo","provider":"BlueStars Parts","version":"1.0","type":"link"}