C/O Spring 2.5in ID x 14in Black

The QA1 C/O Spring 2.5in ID x 14in Black is a high-travel coil-over suspension spring engineered for vehicle platforms requiring precision damping and load support. This coil spring is purpose-built for enthusiasts and technicians who demand consistent performance across variable ride heights and weight distributions. Coil-over springs like this are essential components in street, track, and off-road applications where adjustable suspension geometry and predictable spring rates directly influence handling characteristics and comfort.

Constructed from high-quality steel with a durable black powder-coat finish, the C/O Spring features a 2.5-inch inner diameter and 14-inch overall length, making it compatible with most standard coil-over shock assemblies. With an 80 lb/in spring rate, this spring delivers a moderate resistance curve suitable for balanced suspension tuning—stiff enough to minimize body roll and maintain axle control, yet compliant enough for everyday usability on varied road surfaces. The black powder coating provides corrosion resistance and a professional appearance, while the high-travel design accommodates full shock extension and compression cycles without binding or premature wear.

This spring performs best when paired with compatible coil-over shock units featuring matching bore and rod dimensions. Professional installers and DIY builders appreciate QA1 springs for their reliability in custom suspension builds, lowering kits, and performance upgrades where precise spring rates are critical. The 80 lb/in rate is ideal for mid-weight vehicles or those running moderate wheel and tire packages; verify shock compatibility and vehicle weight distribution before installation to ensure optimal damping and longevity. Each unit ships individually, allowing builders to source matched pairs or sets for multi-corner suspension configurations.