What is a linear spring rate?

A linear spring rate means that the force the spring exerts increases at a constant rate as it is compressed. This provides predictable suspension behavior, which is important for performance tuning.

What does the 61mm ID refer to?

The 61mm ID refers to the inner diameter of the spring. This measurement is important for ensuring the spring will fit correctly onto the shock body or perch of your coilover system.

Is this spring sold individually?

Yes, this listing is for a single spring. If you need a set for your vehicle, you will need to purchase multiple individual springs.

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Specifications

Brand: AST
Part #: AST-180-50-61
UPC: astAST-180-50-61

AST Linear Race Springs - 180mm Length x 50 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 180mm Length x 50 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-180mm-length-x-50-n-mm-rate-x-61mm-id-single-t14-329823
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.

Key Features

This product includes one (1) AST Linear Race Spring.
The spring measures 180mm in length.
It has a spring rate of 50 N/mm.
The inner diameter of the spring is 61mm.

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About this part

Product Details

This listing is for a single AST Linear Race Spring. You get one spring measuring 180mm in length with a spring rate of 50 Newtons per millimeter and an inner diameter of 61mm. These springs are designed for performance applications where precise suspension control is important.

The linear spring rate means that as the spring is compressed, the force it exerts increases proportionally. This predictable behavior is crucial for tuning suspension response, especially in racing or track day setups. The 61mm inner diameter is a common size for many coilover systems, making it a versatile option for builders and tuners looking to customize their suspension.