What is a linear spring rate?

A linear spring rate means the spring's resistance increases proportionally to how much it's compressed. For every inch or millimeter you compress it, the force it exerts increases by the same amount. This makes suspension behavior very predictable and easier to tune for specific handling characteristics.

What does the 61mm ID refer to?

The 61mm ID refers to the inner diameter of the spring. This measurement is important to ensure the spring fits correctly onto the shock body or perch of your coilover assembly. Always confirm this dimension matches your existing setup or the intended application.

Are these springs sold individually?

Yes, this listing is for a single AST Linear Race Spring. If you are replacing springs on a vehicle, you will typically need to purchase them in pairs for the front or rear axle to maintain balanced suspension performance.

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Specifications

Brand: AST
Part #: AST-120-160-61
UPC: astAST-120-160-61

AST Linear Race Springs - 120mm Length x 160 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 120mm Length x 160 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-120mm-length-x-160-n-mm-rate-x-61mm-id-single-t14-329724
Price: 103.36 USD
Availability: BackOrder

$103.36

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

AST Linear Race Springs - 120mm Length x 160 N/mm Rate x 61mm ID - Single. Ideal for performance builds needing precise suspension tuning.

Key Features

Fits: Coilover suspension systems.
Spring Length: 120mm.
Spring Rate: 160 N/mm.
Inner Diameter: 61mm.
Type: Linear race spring.

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About this part

Product Details

If you're building a performance suspension setup or rebuilding your coilovers, these AST Linear Race Springs are a solid option. They offer a consistent spring rate of 160 N/mm throughout their travel, which is crucial for predictable handling and responsiveness. The 120mm length and 61mm inner diameter are common dimensions, making them suitable for many coilover applications where you need to fine-tune your ride height and stiffness.

These springs are made with a focus on performance, meaning they're built to handle the demands of spirited driving and track use. The linear rate means that for every millimeter the spring is compressed, it resists with the same amount of force, making suspension behavior easier to predict and tune. This consistency is key when setting up a car for optimal cornering and stability.