{"product_id":"rk-racing-chain-m520hd-120-520-series-120-link-heavy-duty-ride","title":"RK Racing Chain M520HD-120 520 Series 120-Link - Heavy-Duty Ride","description":"\u003cp\u003eIn this review the RK Racing Chain M520HD-120 (520 Series) is evaluated for riders who need a reliable, heavy-duty replacement chain for street and off-road machines up to 400cc. The single biggest reason to consider this chain is its construction: made in Malaysia from Japanese steel with two-point riveted pins and curled bushings, and delivered pre-stressed and pre-stretched to reduce initial adjustments. That combination promises strong tensile strength and fewer break-in hassles for riders who value service life and fit.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eJapanese steel construction:\u003c\/strong\u003e The chain is made in Malaysia using Japanese steel, which provides a durable base material for long-term use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-point riveted pins:\u003c\/strong\u003e Two-point riveted pins increase joint strength and reduce the risk of pin failure under harder riding conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurled bushings:\u003c\/strong\u003e Curled bushings improve link articulation and wear resistance for smoother power transfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-stressed and pre-stretched:\u003c\/strong\u003e Delivered pre-stressed and pre-stretched to minimize early stretch and reduce initial adjustment time after installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh maximum tensile:\u003c\/strong\u003e Rated to 7700 pounds\/ft tensile strength, offering a robust safety margin for up to 400cc street and off-road use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster link clip type:\u003c\/strong\u003e Uses a clip-type connecting link for straightforward installation and serviceability in the field.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis chain is best for motorcycle riders with mid-size machines up to 400cc who want a value-oriented, heavy-duty replacement that is built to Japanese specifications. It fits vehicle-specific applications where a 520-series chain is required and where durability and reduced initial adjustment are priorities.\u003c\/p\u003e\n\u003cp\u003eRiders who demand premium corrosion protection or those running extremely high-power or race-tuned bikes above the stated 400cc range may prefer a different, more specialized chain with sealed O-rings or higher temperature treatments. Also, if on-board rust resistance is a top concern, consider chains with explicit anti-corrosion coatings.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRobust build quality from Japanese steel and two-point riveted pins gives confidence in tensile strength and wear life.\u003c\/li\u003e\n\u003cli\u003ePre-stressed, pre-stretched condition reduces initial slack and shortens break-in adjustments after fitting.\u003c\/li\u003e\n\u003cli\u003eCost-effective two-pack configuration delivers value for routine maintenance and spare inventory.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report rust and stretching issues in service, so corrosion protection may be limited without regular maintenance.\u003c\/li\u003e\n\u003cli\u003eClip-type master link is convenient but has been mentioned in a few reports as less secure than some factory-pressed links, so periodic checks are advised.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLinks\u003c\/td\u003e\n\u003ctd\u003e120 per chain (2-pack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin to pin center\u003c\/td\u003e\n\u003ctd\u003e15.875mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin length\u003c\/td\u003e\n\u003ctd\u003e18.80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum tensile\u003c\/td\u003e\n\u003ctd\u003e7700 pounds\/ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.65 lb per 100 links\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaster link type\u003c\/td\u003e\n\u003ctd\u003eClip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe RK Racing Chain M520HD-120 is a solid, value-focused heavy-duty chain for riders of up to 400cc machines who want a durable replacement that arrives pre-stressed for easier setup. It offers strong tensile ratings and practical serviceability, making it a good choice for routine maintenance and spares, though riders who need superior rust protection should plan regular cleaning and lubrication or consider a coated alternative.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this chain fit my 520-spec motorcycle?\u003c\/strong\u003e\u003cbr\u003eYes, it is a 520-series, vehicle-specific fit type; confirm 520 chain compatibility and link count needed before purchase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the chain come ready to install without break-in stretching?\u003c\/strong\u003e\u003cbr\u003eIt is pre-stressed and pre-stretched to minimize early stretch, but follow normal adjustment checks after a short initial use period.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the master link permanent?\u003c\/strong\u003e\u003cbr\u003eThe chain uses a clip-type connecting link for easy service and replacement; inspect the clip regularly for secure fitment.\u003c\/p\u003e","brand":"RK Racing Chain","offers":[{"title":"Default Title","offer_id":48615928922331,"sku":"B097FG7P2K","price":91.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61aOvO1-04L._AC_SL1000_5ea44dda-e7a4-4e16-b654-995298167fed.jpg?v=1778756494","url":"https:\/\/gearmusthave.com\/products\/rk-racing-chain-m520hd-120-520-series-120-link-heavy-duty-ride","provider":"GearMustHave","version":"1.0","type":"link"}