KR4 Performance offers a variety of Carburetor Modifications. We tailor the standard Carb and modify it to eliminate Boggs, hesitation and in most cases make it feel like Fuel Injection.
Electronic Fuel Injection (EFI) Mapping We work close within the Factory EOM's to ensure our customers get the best on the market. Get your customized KR4 Mapping today! Let KR4 whip up the right map recipe for you! Mapping is tailored to suit your riding style, produce an optimum running machine that will give you extra mid range, and a smoother power curve!