1Made of high quality plastic and copper material, tough, high rigidity and collision resistance, very durable and safe to use. 2Ignition coil helps to improve combustion efficiency and strengthen electrical performance. 3CDI will eliminate rev-limit which keeps your bike restricted, and also reset your ignition advance curve for better acceleration. 4Regulator rectifier helps to dissipate excess voltage, improve charging capability and prevent overcharging battery. 5Stable characteristics, high reliability.Features: Made of high quality plastic and copper material, tough, high rigidity and collision resistance, very durable and safe to use. Ignition coil helps to improve combustion efficiency and strengthen electrical performance. CDI will eliminate rev-limit which keeps your bike restricted, and also reset your ignition advance curve for better acceleration. Regulator rectifier helps to dissipate excess voltage, improve charging capability and prevent overcharging battery. Stable characteristics, high reliability. Specification: Material: Plastic, Copper Color: Black Size: Shown as picture Package Weight: Approx. 528g / 18.6oz Fitment: for ATV Dirt Bike Gokart 50 70 90 110 125 Ignition Coil fits for 50cc 70cc 90cc 110cc 125cc ATV Scooter Moped Go kart and Dirt bike CDI Box fits for 50-125cc scooters, mopeds, ATVs, go karts with 4 stroke engine, 5 pins plug Regulator Rectifier fits for 50cc to 300cc dirt bike and ATVs, 4 pins plug Starter Relay fits for 50cc, 70cc, 90cc, 110cc, 125cc ATV Package Included: 1 * Relay 1 * Regulator Rectifier 1 * CDI 1 * Ignition Coil Note: 1. Easy to install, but professional installation is highly recommended. 2. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 3. The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.