Moog offers two types of coil springs: constant-rate springs that restore handling to its original state, and cargo-coil, variable-rate springs as an upgrade for vehicles that carry heavy loads.

Moog’s constant-rate springs are built to replace original equipment springs, returning ride height and body sway to original performance levels. Replacing worn coil springs with Moog constant-rate springs restores vehicle handling.

Our cargo-coil, variable-rate springs change resistance as they compress and become progressively stiffer as the load increases. These springs are vinyl-coated for corrosion resistance and extended service life.

Moog provides several features and benefits on both our constant-rate springs and our cargo-coil, variable-rate springs.

On both, we heat-treat the alloy steel to ensure the coils rebound fully and resist sagging. We also provide constant-rate springs with an enamel coating that resists corrosion and extends service life.

While many coil springs are equipped with protective tubes to insulate the clash of metal on metal, Moog uses a premium urethane tube that will outlast our competitors’ PVC tubes on both our constant-rate and variable-rate coil springs.