{"product_id":"rk-racing-chain-428-series-motorcycle-chain-m428h-140-140-link-non-o-ring-2-point-riveted-durable-construction","title":"RK Racing Chain 428-series motorcycle chain M428H-140 — 140-link non O-ring, 2-point riveted durable construction","description":"\u003cp\u003e\u003cstrong\u003eRK Racing Chain M428H-140 is a 140-link, standard non O-ring 428-series motorcycle chain built from Japanese steel for reliable strength and long wear in small-displacement bikes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis M428H-140 from RK Racing Chain (RKM series) is manufactured in Malaysia to Japanese specifications, combining two-point riveted pins and curled bushings with pre-stressed, pre-stretched construction. It is intended for lighter street and off-road motorcycles where a durable, economical non O-ring chain is preferred over sealed designs.\u003c\/p\u003e\n\n\u003ch3\u003eHow strong and durable is the M428H-140?\u003c\/h3\u003e\n\u003cp\u003eThe chain is engineered to deliver consistent tensile strength and predictable wear life for 125cc-class street bikes and smaller off-road machines. Its build uses quality materials and assembly methods that raise fatigue resistance compared with many competing standard chains.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum tensile strength: 4,500 pounds\/feet\u003c\/li\u003e\n  \u003cli\u003eMaximum wear life index: 100 (factory-rated benchmark)\u003c\/li\u003e\n  \u003cli\u003eTwo-point riveted pins and curled bushings for improved joint life\u003c\/li\u003e\n  \u003cli\u003ePre-stressed and pre-stretched to reduce initial elongation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this chain fit my motorcycle and how do I measure compatibility?\u003c\/h3\u003e\n\u003cp\u003eThe M428H-140 is a 428-series standard chain with 140 links and 12.7mm pin-to-pin pitch, matching bikes that call for 428 pitch chains. Confirm compatibility by checking your owner's manual or measuring your current chain’s pitch and link count.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePitch (pin to pin center): 12.7 mm (428 standard)\u003c\/li\u003e\n  \u003cli\u003eLinks included: 140 (adjustable length via master\/clip link)\u003c\/li\u003e\n  \u003cli\u003e24.0 links per foot; pin length 16.85 mm\u003c\/li\u003e\n  \u003cli\u003eMaster link type: clip style for easier field repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance and service life can I expect from a non O-ring chain?\u003c\/h3\u003e\n\u003cp\u003eNon O-ring chains like this require more frequent lubrication and inspection than sealed chains, but they are lighter and simpler to service. With regular cleaning, proper tension, and lubrication, you can achieve reliable mileage and predictable wear performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended: clean and lube at regular intervals and after wet or dusty rides\u003c\/li\u003e\n  \u003cli\u003eInspect for elongation, tight spots, and pin wear periodically\u003c\/li\u003e\n  \u003cli\u003eReplace when wear index or elongation exceeds safe limits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow heavy is the chain and what bikes is it intended for?\u003c\/h3\u003e\n\u003cp\u003eThe M428H-140 is relatively lightweight and optimized for small-displacement machines. Its mass and strength balance make it well suited for urban street bikes and lower-capacity off-road machines where agility and low rotating weight matter.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWeight: 1.85 pounds per 100 links (proportionally ~2.59 pounds for 140 links)\u003c\/li\u003e\n  \u003cli\u003eSuggested maximum engine capacity: up to 125cc for street, 80cc for off-road use\u003c\/li\u003e\n  \u003cli\u003eDesigned for a range of small to lightweight motorcycles and pit bikes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The RK Racing Chain M428H-140 is aimed at riders and mechanics who need a trustworthy, serviceable non O-ring 428 chain for light street or off-road motorcycles. It suits owners who prefer simpler maintenance, lower cost replacement chains, and a product built to Japanese specs with proven joint construction methods.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this chain pre-stretched?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The M428H-140 comes pre-stressed and pre-stretched to minimize initial elongation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does it include a master link?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. A clip-type master (connecting) link is supplied for fitting and field repairs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RK Racing Chain","offers":[{"title":"Default Title","offer_id":48082977292446,"sku":"B00BV6VA06","price":52.22,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/rk-racing-chain-m428h-140-full-chain-layout.jpg?v=1785821393","url":"https:\/\/northtrailauto.ca\/products\/rk-racing-chain-428-series-motorcycle-chain-m428h-140-140-link-non-o-ring-2-point-riveted-durable-construction","provider":"North Trail Auto","version":"1.0","type":"link"}