{"product_id":"rk-racing-chain-gb420mxz120-120-links-gold-mx-chain-review","title":"RK Racing Chain GB420MXZ120 120-Links Gold MX Chain - Lightweight","description":"\u003cp\u003eIn this review the RK Racing Chain GB420MXZ120 is evaluated for riders who need a lightweight, durable replacement chain with a distinct gold finish. The bottom line: this is a solid mini-works racing chain best suited for off-road and small-displacement motocross bikes where a high strength-to-weight ratio matters. The chain's chromoly steel construction, oversized alloy pins and RK's HIT heat treatment combine to deliver reliable \u003cstrong\u003echain strength\u003c\/strong\u003e and long wear life for riders demanding a strong, well-fitting drive train component.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromoly construction:\u003c\/strong\u003e The chromoly steel body provides a strong, fatigue-resistant backbone for aggressive riding and extended service intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOversized alloy pins:\u003c\/strong\u003e Special oversized pins increase shear resistance and reduce the chance of pin failure under heavy load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHIT heat treatment:\u003c\/strong\u003e All components undergo RK's Heat Induction Transfer process to improve surface hardness and wear resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless rollers and bushings:\u003c\/strong\u003e The seamless rollers and bushings offer smoother engagement with sprockets, which helps reduce noise and uneven wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh tensile rating:\u003c\/strong\u003e With a tensile strength of 5000 pounds per ft, the chain is capable of handling demanding loads relative to its class.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGold finish:\u003c\/strong\u003e The gold plating gives the chain a distinctive look that many customers compliment for appearance and corrosion resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe GB420MXZ120 is aimed at riders of small to mid-size motocross and off-road motorcycles who want a durable, lightweight chain that fits common applications such as older CRF70F-style bikes and other mini-works platforms. It works well for weekend riders and racers who value a combination of \u003cstrong\u003edurability\u003c\/strong\u003e and looks.\u003c\/p\u003e\n\u003cp\u003eRiders with heavy street motorcycles or machines requiring larger pitch chains should look elsewhere, as this is a mini-works 420-series chain designed for smaller drive trains and specific sprocket pairings rather than heavyweight touring or large-displacement race machines.\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\u003eStrong tensile rating and oversized pins contribute to dependable \u003cstrong\u003echain strength\u003c\/strong\u003e under load.\u003c\/li\u003e\n\u003cli\u003eChromoly construction and HIT heat treatment enhance wear resistance and longevity.\u003c\/li\u003e\n\u003cli\u003eSeamless rollers and bushings provide smooth rotation and better sprocket engagement.\u003c\/li\u003e\n\u003cli\u003eGold finish improves appearance and can help with corrosion resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for smaller motocross or mini-works bikes, so not suitable for larger pitch or heavy street applications.\u003c\/li\u003e\n\u003cli\u003eCustomers should verify link count and fitment carefully; one must ensure the 120-link length matches their bike or be prepared to shorten it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eGB420MXZ120 120-Links Gold MX Chain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eRK Racing Chain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eChromoly steel with seamless rollers and bushings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePins\u003c\/td\u003e\n\u003ctd\u003eOversized special alloy pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat treatment\u003c\/td\u003e\n\u003ctd\u003eRK HIT (Heat Induction Transfer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile strength\u003c\/td\u003e\n\u003ctd\u003e5000 pounds per ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLink count\u003c\/td\u003e\n\u003ctd\u003e120 links with connecting link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe RK Racing Chain GB420MXZ120 is a well-engineered mini-works chain that offers strong value for riders of small motocross and off-road bikes. With robust chromoly construction, oversized pins and RK's HIT process, it delivers dependable performance and a standout gold finish. Choose it if you need a reliable, lightweight chain that fits the 420-series applications and want a balance of \u003cstrong\u003equality chain\u003c\/strong\u003e and appearance.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this chain fit my bike?\u003c\/strong\u003e\u003cbr\u003eCheck your bike's required chain pitch and recommended link count; this is a 420-series 120-link chain intended for mini-works and similar small-displacement drivetrains.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the gold finish purely cosmetic?\u003c\/strong\u003e\u003cbr\u003eThe gold plating improves appearance and can provide some corrosion resistance, but the chain's longevity comes primarily from chromoly construction and HIT heat treatment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it come with a connecting link?\u003c\/strong\u003e\u003cbr\u003eYes, the product includes a connecting link to complete installation and sizing on the bike.\u003c\/p\u003e","brand":"RK Racing Chain","offers":[{"title":"Default Title","offer_id":48149379842267,"sku":"B000GTUG2M","price":39.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71L44mS5X7L._AC_SL1200.jpg?v=1768911748","url":"https:\/\/gearmusthave.com\/products\/rk-racing-chain-gb420mxz120-120-links-gold-mx-chain-review","provider":"GearMustHave","version":"1.0","type":"link"}