These carburetor tuning kits from DynoJet are the best solution for eliminating flat spots in the acceleration of 1988-present Sportster and Big Twin models equipped with Keihin CV carburetors. DynoJet kits allow easy carburetor adjustment on stock engines as well as engines with performance cams and exhausts. Each kit comes with a detailed, easy-to-read instruction manual that guides you step-by-step through adjusting and modifying the carburetor. Also included are a selection of main jets, a needle jet, an adjustable needle with spacers and circlips, a spring and drill bits.
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