What is a linear spring rate?

A linear spring rate means that the force required to compress the spring increases at a constant rate. For every millimeter the spring is compressed, the resistance increases by the specified Newton value, providing predictable suspension behavior.

What does the 61mm ID refer to?

The 61mm ID refers to the inner diameter of the spring. This measurement is crucial for ensuring the spring fits correctly onto the shock body or perch of your coilover assembly.

Are these springs sold individually?

Yes, these AST Linear Race Springs are sold individually. You will need to purchase the correct quantity and spring rates to match your specific suspension setup and performance goals.

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Specifications

Brand: AST
Part #: AST-200-55-61
UPC: astAST-200-55-61

AST Linear Race Springs - 200mm Length x 55 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 200mm Length x 55 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-200mm-length-x-55-n-mm-rate-x-61mm-id-single-t14-329844
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

Fits coilovers with a 61mm inner diameter.
Features a linear spring rate of 55 N/mm for consistent resistance.
Spring length measures 200mm.
Constructed from durable spring steel for longevity.
Designed for performance and track applications where precise feedback is needed.

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About this part

Product Details

These AST Linear Race Springs are built with a 61mm inner diameter and a spring rate of 55 Newtons per millimeter. The 200mm length makes them suitable for a variety of coilover applications where a specific suspension tuning is desired. Linear springs offer a consistent force increase throughout their compression, meaning the further they compress, the more resistance they provide in a predictable way. This makes them a popular choice for performance builds where precise suspension feedback is important.

Constructed from durable spring steel, these AST springs are made to withstand the rigors of track use and spirited driving. The consistent spring rate helps maintain predictable handling characteristics, allowing you to feel more connected to the road and make finer adjustments to your vehicle's suspension setup. They are designed to work with compatible coilover bodies that match the 61mm inner diameter and desired spring length.