CG125cc small shell modified CDI.4+2 Pin male plug AC CDI Replacement for CG 125cc 150c 200c 250cc Vertical Engine,not for GY6 or horizontal engine 6 pin cdi box fit for 125cc 150cc 200cc 250cc ATV dirt bike go kart 4 wheeler quad bikes motorcycle This AC CDI will eliminate rev-limit which keeps your bike restricted,and also reset your ignition advance curve for better acceleration.increase the acceleration of your car,improve the low-temperature ignition efficiency,and bring you a new driving experience Warranty:We are always available to help our customers.Please message us for replacement or refund if you are not satisfied with the order