{"product_id":"hayden-primary-chain-tensioner-big-twins-39-1201","title":"Hayden Primary Chain Tensioner - BIG Twins","description":"\u003cp\u003eHayden primary chain tensioner for big-twin V-twin motorcycles, automatically adjusting tension during acceleration and deceleration to eliminate slack and reduce drivetrain noise. Smoother shifting and a noticeably quieter transmission are the main benefits.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic tension adjustment during acceleration and deceleration\u003c\/li\u003e\n  \u003cli\u003eReduces primary chain slack and noise\u003c\/li\u003e\n  \u003cli\u003eSmoother shifting without transmission clunk\u003c\/li\u003e\n  \u003cli\u003eNoticeably smoother ride quality\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 Hayden\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e M6-BT01\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 4.45 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 7 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.25 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.69 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits V-twin big-twin motorcycles, including Harley-Davidson and Indian Motorcycle models.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat does a primary chain tensioner do?\u003c\/h3\u003e\n\u003cp\u003eIt automatically adjusts tension on the primary chain during acceleration and deceleration, keeping the chain tight and eliminating slack that causes clunking and noise.\u003c\/p\u003e\n\u003ch3\u003eWill this make my transmission quieter?\u003c\/h3\u003e\n\u003cp\u003eYes. By maintaining proper tension, the primary chain won't slap or rattle, and shifting becomes noticeably smoother with less clunk.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit my specific Harley or Indian model?\u003c\/h3\u003e\n\u003cp\u003eThis tensioner is designed for V-twin big-twin engines. Verify fitment with the manufacturer or your dealer for your exact year and model.\u003c\/p\u003e\n\u003ch3\u003eIs installation difficult?\u003c\/h3\u003e\n\u003cp\u003eInstallation involves removing the primary cover and replacing the stock tensioner. Most riders use a shop, but mechanically inclined owners can do it at home with basic tools.\u003c\/p\u003e","brand":"Hayden","offers":[{"title":"Default Title","offer_id":53035043225711,"sku":"39-1201","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_76781744-5ffe-44e9-9b7d-5c2279b02395.png?v=1779560242","url":"https:\/\/vtwinbikers.com\/products\/hayden-primary-chain-tensioner-big-twins-39-1201","provider":"Vtwinbikers","version":"1.0","type":"link"}