
This part being universal, it may require adaptations
Harley Main Jet - KEIHIN (Ref. N424-27150)
Replace or optimize the carburation of your Harley with this main jet from Keihin. Designed to act at the crucial stage of acceleration and wide-open throttle, it allows you to adjust the air/fuel ratio to achieve a carburation better suited to your usage — cruising, two-up riding, or spirited riding.
Replacement part intended for Keihin carburetors fitted on certain Harley models. Installation requires disassembly of the carburetor body and checking other carburation components (idle jet, needle, mixture). For reliable results, check compatibility with your model and the appropriate jet size for your altitude, fuel, and engine modifications.
Practical tips: proceed in small increments during testing, check the condition of the spark plugs to assess the mixture, and conduct a gradual road test. This Keihin jet is aimed at riders who want to take control of their carburation and refine engine response without compromising on manufacturer quality.