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Rick's Motorsport Electrics offers both OEM style and Hot Shot Series aftermarket replacement CDI boxes for ATVs. There are so many factors that can cause a CDI box to go out, which is why it's the only product that we sell without a warranty. 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, we recommend that you rule everything else out before replacing the CDI box. Order yours today, shipping is free.