A fuel delivery modification component intended to optimize engine performance, specifically in motorsport or high-performance applications. These aftermarket components are designed to replace or augment the existing fuel jets within a carburetor, allowing for finer control over the air-fuel mixture across the engine’s RPM range. For example, a motorcycle experiencing lean running conditions at high RPM might benefit from the installation of a richer fuel jet to deliver more fuel and improve power output.
The significance of such modifications lies in the potential for enhanced engine responsiveness, increased power output, and improved fuel efficiency when properly tuned. Historically, modifying carburetors with individual jets was a common practice. Modern kits offer a more comprehensive and potentially more precise approach to fuel delivery optimization. Benefits can include a smoother power curve, reduced engine hesitation, and optimized combustion, contributing to improved overall vehicle performance.