Coilover Spring 12in x 2.5in x 225lb Barrel

The Coilover Spring 12in x 2.5in x 225lb Barrel from SWIFT SPRINGS is engineered for serious suspension tuning on road course, drift, and street-performance builds. This barrel-style spring is the workhorse component in modern coilover kits, delivering consistent spring rates and ride height adjustability without the complexity of traditional multi-stage suspension geometry. Whether you're building a dedicated track car or refining your daily driver's handling balance, this spring provides the damping compliance and predictable load curve that skilled mechanics and enthusiasts demand.

Rated at 225 pounds per inch, this coilover spring delivers a moderately stiff spring constant ideal for controlled body roll, reduced pitch under hard braking, and stable cornering at highway and track speeds. The 12-inch free length and 2.5-inch barrel diameter are engineered to fit most OEM and aftermarket coilover bodies, ensuring easy integration with quality dampers and adjustment collars. SWIFT SPRINGS uses high-tensile steel construction and precision winding to maintain linearity throughout the compression stroke, minimizing unsprung mass transfer and maximizing the effectiveness of your damper tuning work.

This spring suits front and rear applications on compact and mid-size performance vehicles, from Japanese sports cars to European platforms where moderate spring rates prevent excessive body roll without inducing harsh secondary compliance. Installation pairs best with adjustable coilover dampers tuned to match the 225lb/in rate, ensuring your suspension geometry and anti-roll performance work in concert. Always verify platform compatibility and suspension clearance before purchase, and consider pairing with matched springs on both axles for balanced handling.