Features: Constructed from high-quality plastic and copper materials, this product is tough, rigid, and resistant to impact, ensuring durability and safety in use. The ignition coil enhances combustion efficiency and boosts electrical performance. The CDI removes the rev-limit that restricts your bike, while resetting your ignition advance curve for improved acceleration. The regulator rectifier dissipates excess voltage, enhances charging capabilities, and prevents battery overcharging. With stable characteristics and high reliability, it is suitable for 50cc, 70cc, 90cc, and 110cc ATVs. Compatible with various Chinese brands, including those suitable for a popular brand. Specification: Condition: 100% Brand New Material: Plastic, Copper Color: Black Size: As shown in the picture Package Weight: Approx. 528g / 18.6oz Fitment: - Ignition Coil suitable for 50cc, 70cc, 90cc, 110cc, and 125cc ATVs, scooters, mopeds, go-karts, and dirt bikes. - CDI Box compatible with 50-125cc scooters, mopeds, ATVs, and go-karts with 4-stroke engines, 5 pins plug. - Regulator Rectifier fits 50cc to 300cc dirt bikes and ATVs, 4 pins plug. - Starter Relay suitable for 50cc, 70cc, 90cc, 110cc, and 125cc ATVs. Package Included: 1 * Relay 1 * Regulator Rectifier 1 * CDI 1 * Ignition Coil Note: 1. Installation is straightforward, but professional installation is highly recommended. 2. Please allow a 0~1 inch error due to manual measurement. Thank you for your understanding. 3. The actual color of the items may vary slightly from the listing images due to different computer screens; thank you for your understanding.