{"product_id":"rk-racing-chain-m520hd-120-120-link-520-series-heavy-duty-ride","title":"RK Racing Chain M520HD-120 120-Link 520 Series - Heavy-Duty Ride","description":"\u003cp\u003eIn this review of the RK Racing Chain M520HD-120, the bottom line is clear: this 520 series chain is aimed at riders who need a heavy-duty, serviceable replacement for street or light off-road bikes up to 400cc. The chain's biggest selling point is build consistency - made in Malaysia from Japanese steel with two-point riveted pins and curled bushings - which delivers dependable tensile strength and a pre-stressed, pre-stretched finish that reduces early adjustment needs. It is recommended for riders who value straightforward durability and conventional clip-style master link serviceability.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eJapanese steel construction:\u003c\/strong\u003e Provides a consistent base material for strength and wear resistance compared with unspecified economy chains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-point riveted pins and curled bushings:\u003c\/strong\u003e Improve joint stability under load so the chain resists failure during normal street and off-road use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-stressed and pre-stretched:\u003c\/strong\u003e Reduces the amount of initial adjustment and sag-in during the first few hundred miles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty tensile rating:\u003c\/strong\u003e A maximum tensile of 7700 pounds\/ft offers a high safety margin for bikes in the stated class.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 120-link length with clip master link:\u003c\/strong\u003e Easy to install and serviceable with common tools for sprocket and drive-train maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact dimensions:\u003c\/strong\u003e 15.875mm pin-to-pin center and 19.2 links per ft provide a typical fit for many 520-equipped bikes up to 400cc.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe RK M520HD-120 is best for owners of small to mid-size motorcycles and powersports machines up to about 400cc who want a robust replacement chain that uses proven materials and traditional clip master link service. It's suited to riders who perform their own maintenance and prefer a chain that arrives pre-stretched to minimize break-in adjustments.\u003c\/p\u003e\n\u003cp\u003eRiders who need corrosion-resistant or sealed O-ring performance for very high-mileage touring or wet-climate use should look elsewhere; this non O-ring standard chain prioritizes strength and serviceability over sealed lubrication life. Also consider upgraded sealed chains if minimal maintenance and maximum rust resistance are primary concerns.\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\u003eSolid construction from Japanese steel gives a reliable tensile capacity for street and light off-road riding.\u003c\/li\u003e\n\u003cli\u003ePre-stressed, pre-stretched finish reduces early adjustments and makes initial fit-up simpler.\u003c\/li\u003e\n\u003cli\u003eClip-style master link keeps replacement and field repairs quick and familiar.\u003c\/li\u003e\n\u003cli\u003eReasonable weight for the class at about 3.65 lb per 100 links balances durability and rotating mass.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNon O-ring design means more frequent lubrication and less protection from rust compared with sealed chains.\u003c\/li\u003e\n\u003cli\u003eSome users report mixed durability outcomes, including occasional stretch and corrosion if not regularly maintained.\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 links\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 M520HD-120 is a practical, value-focused heavy-duty 520 chain for riders of up to 400cc machines who prioritize strength, easy servicing, and lower initial maintenance thanks to pre-stretching. It represents good value where sealed O-ring protection is not required, but those in corrosive environments should expect to maintain it regularly to avoid rust and premature stretch.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this chain suitable for my 400cc motorcycle?\u003c\/strong\u003e\u003cbr\u003eThe chain is rated for up to 400cc street and non-auburn off-road use and fits typical 520 drivetrains, so it is suitable for most 400cc bikes that accept a 520 chain.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this chain come with an O-ring?\u003c\/strong\u003e\u003cbr\u003eNo, the M520HD-120 is a standard non O-ring chain, so expect to re-lubricate more often than for sealed chains.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of master link is included?\u003c\/strong\u003e\u003cbr\u003eThe chain uses a clip-style master link for installation and field repairs.\u003c\/p\u003e","brand":"RK Racing Chain","offers":[{"title":"Default Title","offer_id":48612751311067,"sku":"B00BV6VYV6","price":41.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61H136hVdHL._AC_SL1000.jpg?v=1778503912","url":"https:\/\/gearmusthave.com\/products\/rk-racing-chain-m520hd-120-120-link-520-series-heavy-duty-ride","provider":"GearMustHave","version":"1.0","type":"link"}