{"product_id":"harddrive-premium-primary-chain-86-link-endless-oe-40037-07-820-51173","title":"Harddrive Premium Primary Chain - 86 Link Endless Oe# 40037-07 — Harley-Davidson Road King, Electra Glide Ultra Classic, Street Glide (2007-2017)","description":"\u003cp\u003eHarddrive premium primary chain for V-twin motorcycles, built with double-row construction and premium-grade materials in an endless design. Made in Japan and distributed by Western Power Sports for Harley-Davidson and Indian Motorcycle applications.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-row chain construction\u003c\/li\u003e\n  \u003cli\u003eEndless design — no master link\u003c\/li\u003e\n  \u003cli\u003ePremium-grade materials\u003c\/li\u003e\n  \u003cli\u003eMade in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Harddrive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 89478\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 191361228537\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 7.05 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 3.5 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 1.2 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits V-twin motorcycles. Verify OEM part number 40037-07 compatibility with your specific model before ordering.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is an endless chain?\u003c\/h3\u003e\n\u003cp\u003eAn endless chain has no master link — it is a continuous loop. Installation requires removing the clutch basket or disassembling the primary cover.\u003c\/p\u003e\n\u003ch3\u003eWill this fit my Harley or Indian?\u003c\/h3\u003e\n\u003cp\u003eThis chain is designed for V-twin applications. Confirm the OEM part number 40037-07 matches your bike's primary chain specification.\u003c\/p\u003e\n\u003ch3\u003eHow do I know if my primary chain needs replacement?\u003c\/h3\u003e\n\u003cp\u003eLook for rust, wear, or slack in the chain. If it cannot be tightened within spec, replacement is needed.\u003c\/p\u003e\n\u003ch3\u003eIs this OEM or aftermarket?\u003c\/h3\u003e\n\u003cp\u003eHarddrive is a quality replacement brand trusted by riders nationwide. This is not a Harley or Indian original equipment part but meets OE specifications.\u003c\/p\u003e","brand":"Harddrive","offers":[{"title":"Default Title","offer_id":53035866456175,"sku":"820-51173","price":163.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/aeef-5db870f6c560e_1f1c4d07-6479-402c-8717-358f07e48b77.jpg?v=1777529863","url":"https:\/\/vtwinbikers.com\/products\/harddrive-premium-primary-chain-86-link-endless-oe-40037-07-820-51173","provider":"Vtwinbikers","version":"1.0","type":"link"}