High Performance Coil for CN250 and CFMoto 172mm Scooters and Go Karts The 250cc performance coil provides great power by creating an incredibly strong signal from your CDI to the spark plug for hotter and more effective combustion. The wire on this 250 performance coil may be shorter than the wire on the stock coil. The reason for this is that the shorter wire allows the strong current to remain strong over the shorter distance.**NOTE: Electrical, High Performance, Aftermarket items are non-returnable, please check photos and specifications before ordering. Please see our Warranty and Returns Policy