King Shocks 3.75 ID Coil Springs 8.5 x 400lb

When you're building a custom suspension setup or upgrading your existing coilovers, the right coil spring rate is crucial for tuning your vehicle's ride and handling. These King Shocks coil springs are designed for 3.75-inch inside diameter applications, offering a specific rate to match your performance goals.

This particular spring measures 8.5 inches in length and has a spring rate of 400 pounds per inch. This rate is a common choice for many performance applications where a balance between comfort and control is desired, helping to manage body roll and improve responsiveness over varied terrain. King Shocks are well-known for their durable construction and consistent performance, making them a solid option for serious off-road or track use.

When selecting coil springs, consider the overall weight of your vehicle and the intended use. A 400 lb/in rate is a good starting point for many builds, but fine-tuning may be necessary to achieve your ideal suspension feel.