Tender Spring 2.5in ID x 3.5in Tall

The Tender Spring 2.5in ID x 3.5in Tall is a precision helper spring engineered for suspension builders, fabricators, and performance enthusiasts who demand exact load control in custom setups. This 300 lb/in spring rate coil spring serves as a take-up spring—designed to pre-load or isolate primary springs in lowered, lifted, or custom suspension geometries. Whether you're fine-tuning a show truck, building a drag car, or constructing a custom chassis, this tender spring eliminates bind, reduces harshness, and maintains consistent spring action across the full range of motion.

Constructed from high-strength steel and finished with a blue powder coat for corrosion resistance, the Tender Spring 2.5in ID x 3.5in Tall features a 2.5-inch inner diameter, 3.5-inch free length, and a linear 300 lb/in spring constant. The compact 3.5-inch height makes it ideal for tight spaces where full-length springs won't fit, while the 300 lb/in rate provides gentle initial resistance without binding under static load. At 1.85 lbs, this spring is lightweight enough for precision tuning yet robust enough to handle repeated compression cycles in high-performance applications.

This spring suits coil-over builds, custom A-arm suspensions, and any application requiring auxiliary spring rate control. Professional fabricators rely on tender springs to dial in suspension feel without compromising ride quality or introducing preload noise. The 2.5-inch ID accommodates standard 2.5-inch coilover bodies and custom spring perches, making it compatible with most aftermarket suspension platforms. Installation requires proper centering in its mounting location to ensure even load distribution and prevent lateral binding.