Coil Over Spring Seat 2.5in Dia - Flat Style

The Coil Over Spring Seat 2.5in Dia - Flat Style from Penske Racing Shocks is an essential component for any serious suspension tuner or performance mechanic building or maintaining a coilover system. This precision-engineered spring perch sits atop your shock body and serves as the critical interface between your coil spring and the damper assembly, ensuring consistent spring preload and proper load transfer throughout suspension articulation. Whether you're setting up a track car, autocross rig, or street performance build, the correct spring seat geometry directly impacts handling consistency and driver feedback.

The flat-style design of this 2.5-inch diameter seat provides a stable, predictable contact surface for your spring's lower end, minimizing spring bind and lateral spring wandering under cornering loads. Manufactured to Penske's strict racing tolerances, this component features precision-ground surfaces and durable construction designed to handle thousands of compression and rebound cycles without wearing or shifting. The compact 4 x 1 x 4.3-inch footprint and lightweight 0.2-pound design make installation and spring preload adjustment straightforward, while the flat profile accommodates a wide range of spring rates and coil wire diameters commonly used in motorsport applications.

Performance-focused builders and experienced suspension technicians rely on this Penske Racing Shocks component when rebuilding damper assemblies or constructing custom coilover setups for road racing, drag racing, or drift applications. Compatibility depends on your shock body diameter and spring seat interface specifications—verify your existing shock specifications before ordering. This spring seat pairs seamlessly with Penske shock bodies and other quality damper platforms engineered with standard 2.5-inch coilover spring seats, making it ideal for restoration work, performance upgrades, or race car maintenance where OEM or proven aftermarket components are non-negotiable.