4-pin AC-CDI ignition, suitable for motorcycles/quads/scooters with 50-125 cm³, adjustable universal ignition module for performance enhancement.

【Universal 4-Pin CDI for Small Engines】 This product is a 4-pin CDI ignition system (capacitor ignition) suitable for various small motorcycles with 50cc, 70cc, 90cc, 110cc, and 125cc engine displacements. Thanks to its universal design, it is compatible with a wide variety of motorcycles, scooters, ATVs, and go-karts that use a 4-pin ignition system. Its main feature is an integrated, adjustable DIP switch, allowing the user to select different ignition curves to optimize performance or adapt to different fuels. [4-Pin AC Interface and Adjustable DIP Switch] Interface type: Standard 4-pin interface, specifically for AC ignition systems (powered by the magneto's AC coil). DIP switch settings: Integrated DIP switches (usually 4 to 6 positions) allow the selection of various preset ignition curves through different combinations. Common modes: Standard mode: Smooth and fuel-efficient operation, suitable for everyday use. Performance mode: Increases the ignition timing at mid to high RPMs, thus improving acceleration and top speed. High-octane fuel mode: Adapts to high-octane gasoline and prevents knocking. Off-road mode: Optimizes torque response at low RPMs.