Located inside the Bullet Train Two stroke motorized bicycle engine kit, the CDI coil is what sends the spark to the spark plug and keep the engine running. This CDI is only compatible with the electric start Bullet Train engine and will not work with standard two-stroke bicycle engine kits.

This 66/80cc Capacitor Discharge Ignition (CDI) is designed for use with Electric Start 2-stroke bicycle engine kits, like the 66/80cc Flying Horse Bullet Train Bicycle Engine Kit

Note: This part is not compatible with standard 66/80cc 2-stroke engine kits, such as the Mega Motors engine, non-electric start Flying Horse engines, Grubee engines, RAW Motors engines, and Power King (PK80) engines