Rick's Motorsport Electrics, Inc offers both O.E.M. style and Hot Shot Series aftermarket replacement CDI boxes. All parts are new and built to O.E.M. specifications. High quality cost effective replacement for O.E.M. parts. Note: The only real way to test your CDI box is to swap it out with another known good unit from the same year/make/model. Because of this, Rick's Motorsport Electrics recommends that you rule everything else out before replacing the CDI box. There are so many factors that can cause a CDI box to go out, which is why it's the only product that Rick's Motorsport Electrics sells WITHOUT a warranty.