Valve Disc Kit 8-pk .542 OD X .010in

The QA1 Valve Disc Kit 8-pack featuring 0.542 OD x 0.010 inch steel discs is a precision shock component engineered for adjustable damping systems in performance suspension applications. This eight-piece set provides the critical internal flow control elements that tune shock absorber response across a range of vehicle platforms, from off-road suspension systems to high-performance street setups. The 0.010-inch thickness and 0.542-inch outer diameter are precisely machined to OEM specifications, ensuring consistent valve behavior and reliable shock performance.

Valve discs control the rate at which shock fluid passes through internal ports, directly governing how quickly the suspension responds to compression and rebound forces. The 0.010-inch disc thickness delivers the specific pressure-drop characteristics needed to maintain stable damping across varying suspension loads and speeds. Steel construction withstands repeated cycling and resists deformation under sustained hydraulic pressure—critical for systems operating in demanding environments where suspension reliability is non-negotiable. The eight-disc configuration provides replacement coverage for multi-stage valve stacks or multiple shock rebuild cycles.

These discs are intended for users rebuilding or tuning QA1 shock systems, including those in off-road vehicles, competition trucks, and performance road cars. Technicians and suspension shops rely on OEM-specified components to maintain shock calibration and ensure consistent damping profiles after maintenance or valve stack adjustments. The 8-pack size suits shops servicing multiple vehicles or users performing staged upgrades to their suspension systems.

QA1 manufactures adjustable coilover and bypass shock systems widely used in competition suspension platforms. Sourcing genuine OEM valve discs ensures that rebuilt shocks maintain the damping characteristics and performance curves they were designed to deliver.