Main By-Pass Quick Disc.

The Main By-Pass Quick Disc is a precision bypass valve jet can assembly engineered for high-performance fuel system applications where regulated pressure control and rapid disconnect convenience are essential. Designed by KINSLER, a trusted name in fuel systems and engine management, this component serves racers, performance builders, and technicians who demand reliable, field-serviceable fuel system solutions. The quick disconnect design eliminates the need for permanent fittings, enabling faster maintenance cycles and tool-free disconnection during pit stops or engine work.

Constructed from aluminum and finished in durable gray anodize, the Main By-Pass Quick Disc features a poppet valve mechanism with adjustable springs and shims to calibrate bypass pressure thresholds to your system's exact requirements. The 6 AN male inlet and outlet ports provide compatibility with standard braided fuel lines and adapters commonly found in racing and custom fuel systems. The poppet design ensures positive, repeatable pressure relief, protecting fuel pumps and injectors from overpressure while maintaining consistent flow rates under load. Weighing just 0.12 lbs, it integrates seamlessly into compact engine bays without adding significant weight.

This component is ideal for EFI fuel systems, carbureted high-flow applications, and custom racing fuel systems where bypass regulation is critical to engine longevity. The quick disconnect coupling allows technicians to service the valve assembly independently without draining or depressurizing the entire fuel line network, reducing downtime on the dyno or at the track. Tuners can easily swap spring and shim stacks to adjust bypass pressure, making this unit an invaluable tool for dialing in multi-fuel and variable-boost platforms. Installation requires standard AN wrenches and basic fuel system knowledge.