GY6 50cc to 150cc High Performance Coil + Cap Spark Plug, It works on other motors as long as your original coil has same wiring style. This coil will eliminate spark plug fouling, decrease hard starting, increase acceleration, increase fuel mileage, and decrease hesitation.It is the cheapest and easiest to install performance upgrade for your scooter. These will only boost performance if your engine and transmission are operating up to peak already. We would recommend also buying a high performance ignition CDI.