Description
Keihin N424-27 series main jets are the go to choice for dialing in the high speed fuel circuit on Keihin CDCV watercraft carburetors. These precision brass jets are stamped and sized by Keihin so you can trust that each change you make on the workbench produces a predictable change in air fuel ratio on the water. IPD Racing stocks a wide range of genuine Keihin sizes so you can fine tune for pipes, flame arrestors, head work, and different riding conditions.
Because CDCV carbs rely heavily on main jet sizing for high rpm fuel delivery, running the correct jet is critical to avoid lean seizures or a sluggish over rich tune. Whether you are refreshing a stock engine or chasing every last rpm from a modified build, genuine Keihin main jets make tuning fast, repeatable, and accurate. Simply select the N424-27 size that matches your combination and install with confidence.
- Genuine Keihin N424-27 high speed main jets built for CDCV personal watercraft carburetors.
- Each jet is precisely drilled and clearly marked for easy identification during jetting changes and plug chops.
- Ideal for riders upgrading exhaust, compression, or intake parts who need to compensate for increased airflow at wide open throttle.
- Using authentic Keihin jets helps maintain consistent fuel flow from cylinder to cylinder and from ski to ski, which is especially important for racers.
- NOTE: Designed for CDCV carburetors only, they are not intended for use in Keihin CDK or CDKII carb bodies.
Combine these main jets with the correct pilot jets, needle settings, and pop off pressure to build a smooth running, hard pulling tune that keeps your engine safe at sustained high rpm.
