{"product_id":"performance-ac-cdi-no-rev-limiter-gy6-50cc-139qmb-standard","title":"Performance AC CDI (No Rev Limiter) - GY6 50cc (139QMB) (Standard)","description":"\u003ch2\u003ePerformance CDI for GY6 50cc to 170cc Scooters\u003c\/h2\u003e\u003cp\u003eThis Performance AC CDI is engineered for GY6-based scooters with 50cc to 170cc engines, specifically designed to replace the factory CDI. It provides an aggressive ignition curve and eliminates the rev limiter to maximize your engine's RPM potential. This makes it one of the key \u003ca href=\"\/collections\/gy6-50cc-parts\"\u003eGY6 50cc scooter parts\u003c\/a\u003e for tuning enthusiasts looking to improve performance.\u003c\/p\u003e\u003ch3\u003eRev Limiter Removal and Ignition Timing\u003c\/h3\u003e\u003cp\u003eThis CDI unit features a retuned ignition timing map that boosts acceleration and throttle response. By removing the factory-restricted RPM ceiling, users will experience a significant increase in engine performance. The high-voltage output of 400–600 volts ensures a strong spark for efficient combustion.\u003c\/p\u003e\u003ch3\u003eBillet Aluminum Housing Design\u003c\/h3\u003e\u003cp\u003eThe unit is enclosed in a strong orange billet aluminum casing, which functions as a cooling element for the internal transformer. This design effectively shields the sensitive electronics from vibrations and heat, promoting reliability during intense use.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\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 400–600V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e ISO 9001 Certified\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis CDI is compatible with a variety of GY6 engines, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e50cc \/ 80cc: 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2\u003c\/li\u003e\n\u003cli\u003e125cc \/ 150cc \/ 170cc: 157QMJ, 161QMK, 152QMI, 1P61QMK, 1P57QMJ, 1P52FMI\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf your engine identifier contains \"QM\" or \"FM\" and operates on an AC CDI system, this module is likely compatible. It does not fit genuine 50cc scooters like Buddy or those with DC ignition configurations, such as the Wolf Jet II.\u003c\/p\u003e\u003cp\u003eNot sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/gy6-50cc-parts\"\u003eGY6 50cc Scooter Parts (139QMB)\u003c\/a\u003e · \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 Scooter Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-cdi-ignition\"\u003eScooter CDI \u0026amp; Ignition\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Magic Cars","offers":[{"title":"Default Title","offer_id":52859325645031,"sku":"25-915142","price":63.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2245\/9711\/files\/performance-ac-cdi-no-rev-limiter-gy6-50cc-139qmb-standard-1.jpg?v=1792234711","url":"https:\/\/www.magiccars.com\/products\/performance-ac-cdi-no-rev-limiter-gy6-50cc-139qmb-standard","provider":"MagicCars","version":"1.0","type":"link"}