{"product_id":"qmb139-racing-clutch-kit-1200-1275","title":"RDLN Racing Clutch w\/ Adjustable Driven Pulley; 139QMB","description":"\u003cp\u003eRDLN's Racing Clutch with Adjustable Sheave Driven Pulley kit significantly improves the performance of your 50cc 139QMB GY6 stock clutch, giving you smooth, reliable, and rapid clutch engagement during acceleration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\u003col\u003e\n\u003cli\u003eCross-drilled holes and tapered vents on the outer drive face significantly enhance heat dissipation\u003c\/li\u003e\n\u003cli\u003eThe clutch shoe comes with reinforced friction plates and 1500rpm clutch springs, ensuring rapid and reliable engagement during acceleration\u003c\/li\u003e\n\u003cli\u003eThe adjustable clutch sheave lets you customize the acceleration profile to match your riding style.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eClutch Spring Tension: 1500rpm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClutch Bell Inner Diameter: 107mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClutch Bell Outer Diameter: 117mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNumber of Clutch Bell Splines: 22\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClutch Bell Splines Inner Diameter: 11.2mm (peak to peak)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClutch Shoe Inner Diameter (flat side to flat side): 24mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClutch Shoe Inner Diameter (round side to round side): 28mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClutch Shoe Overall Outer Diameter: 105mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClutch Shoe Overall Height: 30mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClutch Sheave: 118mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility: \u003c\/strong\u003eThis product fits 50cc 139QMB engines and those with the following codes. \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e139QMB-based 50cc \/ 80cc engines with the following engine codes:\u003c\/strong\u003e\u003c\/p\u003e\u003ctable width=\"463\" height=\"100\" style=\"width: 87.0908%;\"\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\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\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\u003cp class=\"MsoNormal\"\u003eMade in Taiwan.\u003c\/p\u003e\u003ch4 style=\"color: #983d3c;\"\u003eThis product is intended for off-road use only.\u003c\/h4\u003e\u003ch4 style=\"color: #983d3c;\"\u003eThis product is not intended for use on public roads or land.\u003c\/h4\u003e\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\u003cp\u003e\u003cstrong\u003e*Performance upgrades are considered racing parts and are not covered by warranty.\u003c\/strong\u003e\u003c\/p\u003e","brand":"RDLN","offers":[{"title":"Default Title","offer_id":49227338907928,"sku":"1200-1275","price":67.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/1200-1275.webp?v=1747841700","url":"https:\/\/www.scooterworks.com\/products\/qmb139-racing-clutch-kit-1200-1275","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}