Suitable for: 50cc, 70cc, 90cc, and 110cc engines. CDI SPARK PLUG SET This spark plug set is designed to improve your ignition system. With high-performance spark plugs and a durable CDI ignition coil, it ensures reliable engine starts and smooth operation. Upgrade your vehicle's electrical components for maximum performance and efficiency. IGNITION SYSTEM UPGRADE With high-quality spark plugs and an advanced CDI coil, this kit is designed for excellent ignition performance. It improves the response and overall performance of your vehicle and guarantees improved ignition quality that ensures smoother acceleration and fuel efficiency. Reliable CDI Kit Ensure optimal engine running with this CDI spark plug kit. It ensures fast and precise ignition, thus improving engine efficiency. Thanks to the easy installation, it is the perfect choice for owners who want to improve the reliability and life of their ignition system. Use scenarios - Daily scooter or moped use: upgrade 50cc–110cc engines for easier starts, smoother throttle response, and better fuel efficiency during commutes. - Maintenance or upgrade: suitable for small-displacement motorcycles, go-karts, or ATVs in the 50cc–110cc range to improve ignition performance. - Refurbishment or performance tuning: restore ignition reliability on aging systems to achieve smoother acceleration.