This is a top quality replacement for the Aprilia RX125 Ignition Coil CDI Unit (Model Rotax 123, Years 1995 thru 1998). Each CDI comes equipped with the proper connectors and wiring, which makes replacement fast and easy. This unit comes with a seperate ignition (high-tension) coil. These aftermarket CDI Units have been manufactured for top track performance. These CDIs deliver massive gains, quicker throttle response and faster starting. The original 2 stroke CDI Unit is shown below on the right.