{"product_id":"ncy-performance-ac-cdi-no-rev-limiter-gy6-139qmb-0900-1005","title":"NCY Performance AC CDI (No Rev Limiter) - GY6 \u0026 139QMB","description":"\u003cp\u003eUnlock your engine's full potential with the \u003cstrong\u003eNCY Performance CDI\u003c\/strong\u003e. Designed specifically for 139QMB and GY6-based 50cc and 150cc scooters, this high-output ignition module replaces your restrictive factory CDI to provide a more aggressive ignition curve and, most importantly, \u003cstrong\u003eremoves the factory rev limiter\u003c\/strong\u003e. This allows your engine to reach higher RPMs and maintain power through the top end of the gear range.\u003c\/p\u003e\u003cp\u003eHoused in a rugged orange billet aluminum casing, this CDI isn't just for looks—the housing acts as a heat sink to protect the internal transformer, which boosts system voltage up to \u003cstrong\u003e400–600 volts\u003c\/strong\u003e for a significantly hotter spark and more efficient combustion.\u003c\/p\u003e\u003ch3\u003eKey Performance Benefits:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnrestricted Power:\u003c\/strong\u003e Eliminates the electronic RPM \"ceiling\" found on stock units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAggressive Mapping:\u003c\/strong\u003e Retuned timing curve for improved acceleration and throttle response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Voltage Output:\u003c\/strong\u003e Internal transformer boosts spark intensity for more reliable ignition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Protection:\u003c\/strong\u003e Durable aluminum housing protects sensitive electronics from road vibration and heat.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDetailed Compatibility:\u003c\/h3\u003e\u003cp\u003eThis is a \u003cstrong\u003e6-Pin (2+4) AC Ignition\u003c\/strong\u003e module. It is compatible with most Chinese-manufactured GY6 engines, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50cc \/ 80cc (139QMB Series):\u003c\/strong\u003e Fits 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, and 139FMA-2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e125cc \/ 150cc \/ 170cc (157QMJ Series):\u003c\/strong\u003e Fits 157QMJ, 161QMK, 152QMI, 1P61QMK, 1P57QMJ, and 1P52FMI.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eDon't see your engine listed? If the engine code includes \"QM\" or \"FM\" and you have confirmed that it has an AC-based CDI system, this product is compatible with your vehicle.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Does NOT fit Genuine 50cc scooters (Buddy\/RoughHouse) or vehicles with DC-based ignition systems (such as the Wolf Jet II).\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Style:\u003c\/strong\u003e 6-Pin (Square 2-pin + 4-pin block)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e AC (Alternating Current)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Output:\u003c\/strong\u003e 400V - 600V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e NCY (ISO 9001 Certified)\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eSafety \u0026amp; Legal:\u003c\/strong\u003e\u003cbr\u003e• This product is intended for \u003cstrong\u003eoff-road\/racing use only\u003c\/strong\u003e.\u003cbr\u003e• Not legal for use on public roads or land.\u003cbr\u003e• \u003cstrong\u003eCalifornia Residents:\u003c\/strong\u003e Not legal for use on pollution-controlled vehicles.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e*Performance upgrades are considered racing parts and are not covered by warranty. \u003c\/strong\u003e\u003c\/p\u003e","brand":"NCY","offers":[{"title":"Default Title","offer_id":47670747168933,"sku":"0900-1005","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/2627\/1141\/files\/0900-1005_0e55e4bc-82dc-4bf4-9f1c-8ed2b2d86ad8.jpg?v=1774953803","url":"https:\/\/classicscootersusa.com\/products\/ncy-performance-ac-cdi-no-rev-limiter-gy6-139qmb-0900-1005","provider":"Classic Scooters USA","version":"1.0","type":"link"}