Progressive Coil Over Springs

Landrum Progressive Coil Over Springs provide the reliable and consistent high performance you need to win.

What Are Progressive Coil Over Springs?

Progressive springs provide a varying spring rate throughout their range of travel. The initial spring rate is low but progressively increases as the spring is compressed. The springs are commonly used in circle track racing applications to help control body roll when cornering.

How Do Progressive Rate Coil Over Springs Work?

Progressive rate coil over springs are produced with varying coil spacing. At one end of the spring the coils are narrow spaced and as the coils progress to the other end of the spring the spacing becomes wider.

When the spring is minimally compressed all coils of the spring are active and a lower spring rate is in effect. As the spring is further compressed, such as when a car takes a set as it enters a corner, the narrow-spaced coils collapse on top of each other until they touch, which is also known as “going solid”. When this happens the number of active coils of the spring is reduced, which results in a higher spring rate.

What Type of Steel is Used for Progressive Coil Over Springs?

We manufacture our progressive coil over springs using the highest quality US made High Tensile Chrome Silicon Alloy Steel for strength, reliability, and to maintain their original high-performance characteristics after repeated use.

Landrum Race Proven Performance

Since 1966, Landrum Performance Springs have helped put racers in victory lane. Racers and crew chiefs trust Landrum for the best spring performance.

Progressive Coil Over Spring Sizes

  • 2.5” ID
  • 10”, 12”, 14” and 16” Lengths
  • Rates:
    • 175-350 lb./in.
    • 140-375 lb./in.
    • 200-400 lb./in.
    • 250-400 lb./in.

Learn more about how Landrum Springs are designed and manufactured here.


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