{"product_id":"gy6-50cc-139qmb-final-drive-gear","title":"GY6 50cc (139QMB) Final Drive Gear","description":"\u003ch2\u003eFinal Drive Gear for CSC Scooters and 139QMB Engines\u003c\/h2\u003e\u003cp\u003eThis final drive gear suits CSC scooters, including the go and go MAX models along with the Pug50, plus any bikes that use 139QMB engines. It carries engine power to the wheels so the scooter keeps running dependably. It is one of the useful \u003ca href=\"\/collections\/gy6-50cc-parts\"\u003eGY6 50cc scooter parts\u003c\/a\u003e for keeping your scooter in good working order.\u003c\/p\u003e\u003ch3\u003e19-Spline Design\u003c\/h3\u003e\u003cp\u003eThe gear uses 19 splines, which lock firmly onto matching components. That tight engagement lets power pass through efficiently and keeps operation smooth. If acceleration or overall performance starts to fall off, this is a part worth inspecting and replacing.\u003c\/p\u003e\u003ch3\u003eCompatibility and Fitment\u003c\/h3\u003e\u003cp\u003eThis part works with several engine models, so it installs without fuss on suitable scooters. Before buying, confirm that your engine code includes \"QM\" or \"FM.\"\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Splines:\u003c\/strong\u003e 19\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter (spline peak to peak):\u003c\/strong\u003e 18mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 15.7mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Chicago Scooter Company go, go MAX and Pug50, and 139QMB-based 50cc\/80cc engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChicago Scooter Company go\u003c\/li\u003e\n\u003cli\u003eChicago Scooter Company go MAX\u003c\/li\u003e\n\u003cli\u003eChicago Scooter Company Pug50\u003c\/li\u003e\n\u003cli\u003eGY6 50cc (139QMB) engines with codes 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD, other QMA and QMB models\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Look for a spline count of 19, an 18mm inner diameter, and a 15.7mm thickness, and make sure the engine code includes QM or FM.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it goes:\u003c\/strong\u003e part #9 on the gear box diagram for the GY6 50cc (139QMB), CSC Go; part #9 on the gear box diagram for the CSC Go Max; part #9 on the gear box diagram for the CSC Pug 50.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/gy6-50cc-parts\"\u003eGY6 50cc Scooter Parts (139QMB)\u003c\/a\u003e · \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 Scooter Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-transmission\"\u003eScooter Transmission \u0026amp; Final Drive\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51138783674425,"sku":"TT-26725","price":13.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/final-drive-gear-for-gy6-50cc-139qmb-1.jpg?v=1794377755","url":"https:\/\/www.trendtimes.com\/products\/gy6-50cc-139qmb-final-drive-gear","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}