Features 1、Includes ignition coil, CDI box and spark plug, replacement for GY6 50cc‑150cc ATV Moped Scooters. 2、The ignition coil can improve the combustion efficiency and enhance the electrical performance, match up exactly with original equipment. 3、CDI box has no rev limit, and has a single‑stage advanced timing circuit, provide faster response to RPM acceleration and a higher RPM limit. 4、The installation is simple and does not require complicated operations, which is convenient for using. 5、Manufactured according to the original production specifications, in line with strict quality standards. Specification Item Type: Ignition Coil + Spark Plug + CDI Box Material: ABS + Aluminum Fitment: Replacement for GY6 50cc-150cc ATV Moped Scooters, Replacement for GY6 QMJ/QMI157, QMJ/QMI152 4-stroke engine Ignition Coil Length: Approx. 50cm/19.7in Ignition Coil Function: This coil can improve combustion efficiency, strengthen electrical performance Match up exactly with original equipment in perfect fitness, just replace and ride again, easy to install . CDI Box: Connector: 6-pin male plug (AC) Size: Approx. 64 x 37 x 42mm/25.2 x 14.6 x 16.5in Color: Orange Features: It has no rev limit & also has a single stage advanced timing circuit,this means that you can get a faster response to RPM acceleration and a higher RPM limit at top end if you use the orange CDI. Note: Not replacement for TRX 125 1987 1988 and more! Spark Plug: 3 Electrode Spark Plug A7TC Material: Aluminum Thread: M10x1 Length: Approx. 7cm/2.8in Electrode Type: J Type Replaces the following Plugs: For NGK: C7HA, C7HSA, C5HA, C5HSA, C5HSB, CR5HS, CR5HSA, CR5HSB, C6HA, C6HSA, CR6HS, CR6HSA For Denso: U22FS-U, U16FS-U, U16FS-UB, U16FSR-UB, U20FS-U, U20FSR-U, U22FSR-U How to distinguish CDI box with AC fired or CDI box with DC fired? If headlights turn on without the engine running(with just the key on), it is a DC system. In the AC system, turning headlights on require the engine to be running. Another indication is, if the engine will only runs with a battery it is DC. If it will runs without a battery, it is a AC system. Package List 1 x Spark Plug 1 x CDI Box 1 x Ignition Coil