{"product_id":"rdln-racing-variator-with-tuning-kit-139qma-139qmb-1200-1273","title":"RDLN Racing Variator with Roller Tuning Kit; 139QMA, 139QMB","description":"\u003cdiv\u003eThe RDLN Racing Variator with tuning kit contains the complete drive pulley variator assembly and 3 complete sets of roller weights to improve the acceleration, top speed, and overall performance of your 139QMA\/139QMB GY6 scooter engine.  \u003c\/div\u003e\u003cdiv\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003col\u003e\n\u003cli\u003eModified ramp plate increases your engine's maximum power output.\u003c\/li\u003e\n\u003cli\u003eCopper core and wear-resistant nylon mean the roller weights last longer.\u003c\/li\u003e\n\u003cli\u003eThe included roller weight tuning kit allows you to customize motor power output for acceleration and top speed.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"ewa-rteLine\"\u003e\u003cul\u003e\n\u003cli\u003eVariator Outer Diameter: 89mm\u003c\/li\u003e\n\u003cli\u003eVariator Inner Diameter: 20mm\u003c\/li\u003e\n\u003cli\u003eDrive Boss Outer Dimension: 20mm\u003c\/li\u003e\n\u003cli\u003eDrive Boss Inner Dimension: 14mm\u003c\/li\u003e\n\u003cli\u003eDrive Boss Length: 38mm\u003c\/li\u003e\n\u003cli\u003eRoller Weight Size: 16x13mm\u003c\/li\u003e\n\u003cli\u003eSet of 6 Roller Weights: 6g each\u003c\/li\u003e\n\u003cli\u003eSet of 6 Roller Weights: 7g each\u003c\/li\u003e\n\u003cli\u003eSet of 6 Roller Weights: 8g each\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv class=\"ewa-rteLine\"\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility: \u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e139QMB-based 50cc \/ 80cc engines with the following engine codes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 87.0908%;\" height=\"100\" width=\"463\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e139QMA\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e139QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e1P39QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e1P39QMA-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eYN139QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eJJ1P39QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e139FMA-2\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eBD1P39QMB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eBN139QMB\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003e147QMD\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eOther QMA models\u003c\/td\u003e\n\u003ctd style=\"width: 24.6905%;\"\u003eOther QMB models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eDon't see your engine listed? If the engine code includes \"QM\" or \"FM\", this product is compatible with your vehicle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRoller Weight Tuning Kit information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAlternating different roller weights allows you to fine-tune your engine output characteristics.  For example, by alternating 3- 7g rollers and 3- 8g rollers in the variator, you can achieve a 7.5g roller set.\u003c\/li\u003e\n\u003cli\u003eLighter weights increase RPMs for a given road speed, while heavier weights lower RPMs for a given road speed. \u003c\/li\u003e\n\u003cli\u003eTailor your tuning to match your engine setup and personal driving style. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e*DANGER: Weights must be installed in a 120-degree pattern! If not, SEVERE ENGINE DAMAGE WILL RESULT!!!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAbout RDLN:\u003c\/strong\u003e RDLN is a premier line of aftermarket performance upgrade systems and components for scooters. RDLN products are engineered to significantly improve the function, performance, and reliability of your vehicle with the ultimate goal being an optimal balance of price, power, and performance. RDLN’s extensive field-testing network ensures each product exceeds customer requirements and expectations every time. RDLN delivers full-throttle performance at uncompromised quality.\u003c\/p\u003e\n\u003ch4 style=\"color: #983d3c;\"\u003eThis product is intended for off-road use only.\u003c\/h4\u003e\n\u003ch4 style=\"color: #983d3c;\"\u003eThis product is not intended for use on public roads or land.\u003c\/h4\u003e\n\u003ch4 style=\"color: #983d3c;\"\u003eThis product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e*Performance upgrades are considered racing parts and are not covered by warranty.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RDLN","offers":[{"title":"Default Title","offer_id":48112349151419,"sku":"1200-1273","price":49.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0719\/1340\/6651\/files\/1200-1273.webp?v=1784312499","url":"https:\/\/thriftyscooters.com\/products\/rdln-racing-variator-with-tuning-kit-139qma-139qmb-1200-1273","provider":"Thrifty Scooters","version":"1.0","type":"link"}