Demon Carburetion Standard Main Metering Jets

Demon Carburetion Standard Main Metering Jets are precision-engineered tuning components that give engine builders and calibrators direct control over fuel delivery and the shape of their engine's fuel curve. As a foundational element of carburetor calibration, these jets regulate the volume of fuel entering the metering blocks — making jet selection one of the most powerful and accessible tuning adjustments available for any performance or racing application.

Key Features:

• Precision brass construction — Machined from quality brass and drilled to exact specifications to maintain tight tolerances for consistent, repeatable fuel delivery
• Individually flow-tested — Each jet is flowed for accuracy, ensuring reliable performance across the entire product line
• Clearly numbered for easy identification — Jets are stamped with their size designation, allowing tuners to quickly identify and swap jets during calibration sessions
• Broad cross-platform compatibility — Designed for use with Demon, Barry Grant Claw, and Holley carburetor applications
• Threaded design — Standard threaded fitment allows for quick, tool-friendly installation and removal
• Sold in pairs — Packaged in matched pairs to simplify replacement and support symmetrical tuning on dual-circuit carburetors

Demon Carburetion established its reputation for innovation when its modular four-barrel carburetors burst onto the scene in the late 1990s, introducing ground-breaking features such as billet metering blocks, ridge-free concentric venturii, and interchangeable tuning components. That same commitment to precision carries through to every metering jet in this product line.

In 2011, Demon Carburetion adopted ISO 9001 certification — an international manufacturing quality standard — with all procedures and records made available annually for independent audit. This level of accountability reflects the brand's dedication to producing parts that perform reliably right out of the box.

A broad range of jet sizes is available across this product line, making it easy to find the exact calibration needed for street performance builds, dedicated race applications, or any combination in between.