Schrader Valve

The Schrader Valve by Penske Racing Shocks (MPN IU-22-S) is a precision tire inflation component engineered for high-performance automotive applications where tire pressure management is critical to vehicle dynamics and handling. Whether you're maintaining a road-race machine, drag-racing setup, or street performance build, this valve ensures consistent, leak-free air retention in demanding conditions. Penske Racing Shocks' reputation for reliability in motorsports translates directly to components that endure thermal cycling, vibration, and frequent pressure adjustments without degradation or air loss.

Schrader valves operate via a spring-loaded check mechanism that opens only when a tire gauge or pump applies direct pressure, preventing accidental air escape during normal handling. This design contrasts with tubeless valve stems in that it functions as both valve and seal, with a tapered metal seat that compresses against the tire bead or wheel assembly to create an airtight fit. The compact 1.65 x 0.7 x 2.05-inch profile and minimal 0.02 lb weight make it ideal for lightweight racing wheels where every ounce matters, while the robust construction withstands pressure cycles and temperature extremes common in motorsport environments.

Mechanics and fabricators working on vintage race cars, tube-type tire setups, or specialty motorsports platforms rely on Schrader valves for their proven air-tightness and universal compatibility. Installation is straightforward—the valve seats into the wheel rim or inner tube with hand pressure or light torque, secured by a locknut to prevent rotation under cornering loads. This component is essential if you're rebuilding vintage wheels, converting to period-correct tubed tires, or maintaining race-spec equipment where OEM plastic stems won't survive sustained g-forces or heat. Check your wheel specifications to confirm valve seat size before ordering to ensure proper fit and seal.