Mikuni American
Mikuni, with a century-long history of innovation in performance carburetors, has evolved to meet the dynamic demands of the motorsport industry. Their expertise has broadened beyond motorcycle carburetors to include a diverse range of products, each designed to excel in performance and adaptability ensuring proper fit and performance for your Harley Davidson.
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What Mikuni American Makes
Mikuni builds performance carburetors and fuel-system components for V-twins: carburetor kits and bodies, the jets, needles, diaphragms and rebuild parts that service them, and the cables and small hardware that go with an install. What we list from Mikuni moves as the catalog moves.
Fitment
Mikuni American fitment is specified part by part, and coverage is not uniform across platforms or model years. Check that the fitment list on the product page names your model and year before ordering.
Why You Need One
A stock ECM is calibrated for the stock intake and exhaust. Open either one up and the mixture goes lean, which costs you the power you just paid for and runs the motor hotter than it should. Tuners come in two broad types: a piggyback that modifies the signal to the stock ECM, and a replacement ECM that takes over entirely. Auto-tune systems correct themselves as you ride using a wideband oxygen sensor; others need a map loaded or a dyno session.
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