Heavy Spring (8)

The Heavy Spring (8) set from KWIK CHANGE PRODUCTS is a tire pressure relief valve spring replacement engineered for operators who demand precision control over pneumatic systems in their vehicles. This set of eight heavy-duty springs is designed specifically for those running modified tire pressure monitoring or relief systems—critical for off-road builds, competition vehicles, and specialized automotive applications where maintaining exact PSI thresholds is non-negotiable. Whether you're fine-tuning a custom air suspension setup, modifying a winch or air compressor circuit, or upgrading factory pneumatic components, these replacement springs restore the responsiveness and accuracy your system demands.

The heavy spring specification indicates a stiffer load rating than standard OEM counterparts, meaning it requires greater pressure differential before the relief valve actuates. This design characteristic is critical for applications requiring higher threshold pressures or systems that must resist pressure drift under vibration and temperature fluctuation. At 0.03 lbs per piece and measuring 1.6 x 0.65 x 3 inches, these compact springs integrate seamlessly into existing valve assemblies while delivering consistent, repeatable performance across repeated cycling. The robust construction ensures minimal fatigue failure, maintaining valve integrity through thousands of actuations in demanding off-road or motorsport environments.

Mechanics and vehicle builders working with aftermarket pneumatic systems—from air suspension platforms to custom compressor networks—rely on heavy springs to achieve the valve tuning their specific applications demand. This eight-piece set provides spare parts for multi-circuit systems or allows side-by-side comparison during diagnostic work. Installation is straightforward for anyone with basic pneumatic system familiarity; simply disassemble the relief valve body, replace the worn or undersized spring, and reassemble. Compatible with any tire pressure relief valve system using standard spring cartridge design, these replacements are essential maintenance items for serious enthusiasts committed to precision vehicle modification.