{"product_id":"naraku-qmb139-super-transmission-kit-137-1","title":"Naraku QMB139 Super Transmission Kit","description":"\u003cbr\u003eNaraku Super Transmission Kit for 50cc QMB139 engines. Kit includes: Variator, Variator Drive Face, Belt, Torque Spring Base, Clutch and Clutch Bell. Choose from either belt length 669mm or 788mm in the drop down menu. The 669mm length belt is for short case engines that use a 10\" rear wheel. The 729mm belt is for long case engines with 12\" rear wheel. The 788mm length belt is for extra long case engines, like are found on the Maddog 50cc Ruckus clone.\u003cbr\u003e\u003cul\u003e \n\n\u003cli\u003eRoller Weight Size: 16x13mm (6g)  \n\n\u003c\/li\u003e\n\u003cli\u003eVariator Outer Diameter: 88mm  \n\n\u003c\/li\u003e\n\u003cli\u003eClutch Drum Number of Splines: 22  \n\n\u003c\/li\u003e\n\u003cli\u003eClutch Drum Spline Inner Diameter (peak to peak): 11.10mm  \n\n\u003c\/li\u003e\n\u003cli\u003eSliding Torque Spring Base Outer Diameter: 118mm  \n\n\u003c\/li\u003e\n\u003cli\u003eDrive Face Number of Splines: 26  \n\n\u003c\/li\u003e\n\u003cli\u003eDrive Face Spline Inner Diameter (peak to peak): 13mm  \n\n\u003c\/li\u003e\n\u003cli\u003eDrive Face Outer Diameter: 113.7mm\u003c\/li\u003e\n\u003c\/ul\u003eQMB139 50cc\/49cc , Various unlisted makes\/models","brand":"Naraku","offers":[{"title":"788","offer_id":49986416345368,"sku":"137-1     788","price":278.0,"currency_code":"USD","in_stock":true},{"title":"669","offer_id":49986417033496,"sku":"137-1     669","price":278.0,"currency_code":"USD","in_stock":true},{"title":"729","offer_id":49986427158808,"sku":"137-1     729","price":278.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/137-1.webp?v=1777783625","url":"https:\/\/www.scooterworks.com\/products\/naraku-qmb139-super-transmission-kit-137-1","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}