{"product_id":"naraku-qmb139-variator-kit","title":"Naraku Performance Variator Kit - 139QMB GY6 50cc 4-Stroke","description":"\u003cp\u003eUpgrade the CVT performance of your GY6 50cc 4-stroke scooter with the \u003cstrong\u003eNaraku Performance Variator Kit\u003c\/strong\u003e. Designed for the QMB139 \/ 139QMB engine platform, this complete kit includes the CNC-machined, PTFE-coated variator drive face, coated movable face with red slider guides, 6 roller weights, bronze bushing, and steel boss sleeve — everything needed for a direct bolt-on variator replacement or performance upgrade.\u003c\/p\u003e\u003ch3\u003eModel Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine Buddy 50\u003c\/li\u003e\n\u003cli\u003eGenuine RoughHouse 50\u003c\/li\u003e\n\u003cli\u003eHonda Ruckus (NPS50)\u003c\/li\u003e\n\u003cli\u003eKYMCO Agility 50, Vitality 50, Filly 50\u003c\/li\u003e\n\u003cli\u003eSYM Mio 50\u003c\/li\u003e\n\u003cli\u003eQMB139 \/ 139QMB 50cc \/ 49cc 4-stroke engines (various makes)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePTFE-Coated Drive Face:\u003c\/strong\u003e Inner variator surface features PTFE coating to prevent galling, reduce friction, and extend belt and roller life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e PTFE-coated variator drive face, CNC movable face with red slider guides, 6 roller weights, bronze bushing, and steel boss sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovable Face:\u003c\/strong\u003e Black-coated aluminum with NARAKU PERFORMANCE engraving and red slider guides for smooth, consistent belt engagement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e88mm Outer Diameter:\u003c\/strong\u003e Correct sizing for QMB139 short-case 50cc CVT systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6g Roller Weights:\u003c\/strong\u003e 16x13mm rollers for an optimized CVT shift curve on stock and mildly tuned 50cc engines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVariator Outer Diameter: 88mm\u003c\/li\u003e\n\u003cli\u003eDrive Face Coating: PTFE (inner surface)\u003c\/li\u003e\n\u003cli\u003eRoller Weight Size: 16 x 13mm\u003c\/li\u003e\n\u003cli\u003eRoller Weight: 6 grams (set of 6)\u003c\/li\u003e\n\u003cli\u003eIncludes: PTFE-coated variator drive face, movable face, 6 roller weights, bronze bushing, steel boss sleeve\u003c\/li\u003e\n\u003cli\u003eEngine: QMB139 \/ 139QMB 50cc 4-stroke\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCalifornia Prop 65 Warning: www.p65warnings.ca.gov\u003c\/p\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003cp\u003eGenuine Buddy 50, Genuine RoughHouse 50, Honda Ruckus NPS50, KYMCO Agility 50, KYMCO Vitality 50, KYMCO Filly 50, SYM Mio 50, and other QMB139 \/ 139QMB 50cc 4-stroke scooters\u003c\/p\u003e","brand":"Naraku","offers":[{"title":"Default Title","offer_id":67964656582977,"sku":"137-42","price":78.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/137-42_1c38c502-6355-4388-bb08-d2c0feafdaf1.webp?v=1792993057","url":"https:\/\/azscooterparts.com\/products\/naraku-qmb139-variator-kit","provider":"AZScooterParts","version":"1.0","type":"link"}