Valve Disc Kit 8pk .542 OD X .015in

The Valve Disc Kit 8pk .542 OD X .015in from QA1 is a precision shock valve component engineered for builders and technicians working with high-performance suspension systems. These valve discs are critical tuning elements in monotube and twin-tube shock absorbers, allowing fine control over oil flow rates and damping characteristics. The eight-piece set provides flexibility to experiment with stacking configurations or replace worn components in performance suspension assemblies.

Each disc measures 0.542 inches in outer diameter with a precise 0.015-inch thickness, manufactured from steel in natural finish for durability and corrosion resistance in fluid-immersed environments. The thin profile and standardized OD allow seamless integration into existing valve stacks, where multiple discs work in concert to create the spring rate and deflection curves that govern shock responsiveness. The 0.015-inch thickness is the critical variable that determines how easily oil bypasses the valve seat—thinner discs yield softer damping, while stacking multiple discs increases resistance progressively.

Suspension tuners, custom shock manufacturers, and off-road enthusiasts benefit most from this kit when dialing in handling balance on performance vehicles, drag racing platforms, or competition off-road setups. Installation requires disassembly of the shock cartridge and careful sequencing of discs around the piston rod; correct orientation and stacking order are essential to achieve the intended damping curve. The eight-pack quantity ensures you have spares for testing alternate configurations or servicing multiple shock units without interruption to your vehicle's development schedule.