{"product_id":"bdl-1-1-2-primary-belt-drive-kit-closed-kickstart-78-83-4-speed-big-twin-nu","title":"BDL, 1-1\/2\" primary belt drive kit. Closed. Kickstart — 78-83 4-speed Big Twin (NU)","description":"8mm pitch. Without idler. Kickstart only. Comes as pulley \u0026amp; belt kit only. Stock clutch can be re-used. 61-41 drive ratio.   Note: See 970974 for the replacement 1-1\/2\" wide 8mm 132t. + belt.  Note: The difference in belts between 65-78 and 78-83 FL; FX models is due to a minor difference in primary housing length. Available belts are therefore designated as a - (minus; slightly shorter \/ MCS 506915) or + (plus; slightly longer \/ MCS 970974) belt; although the number of teeth is identical.\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 78-83 4-speed Big Twin (NU)\u003c\/p\u003e","brand":"Belt Drives Ltd.","offers":[{"title":"Default Title","offer_id":54237208936775,"sku":"555687","price":782.16,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/7812\/0519\/files\/555687k.jpg?v=1784469685","url":"https:\/\/www.chopperessentials.com\/products\/bdl-1-1-2-primary-belt-drive-kit-closed-kickstart-78-83-4-speed-big-twin-nu","provider":"Chopper Essentials Co.","version":"1.0","type":"link"}