What does a 50 N/mm spring rate mean for my car?

A 50 N/mm spring rate means that for every millimeter the spring is compressed, it exerts 50 Newtons of force. This rate offers a firmer ride than stock, which can improve handling and reduce body roll during cornering.

What is the advantage of a linear spring rate?

Linear springs provide a consistent force increase as they compress. This predictability is beneficial for suspension tuning, allowing for more precise adjustments to handling characteristics and a more stable feel during aggressive driving.

What is the inner diameter of this spring?

This AST Linear Race Spring has an inner diameter of 61mm. This is a common size for many aftermarket performance coilover systems, but it's always best to verify compatibility with your specific setup.

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Specifications

Brand: AST
Part #: AST-220-50-61
UPC: astAST-220-50-61

AST Linear Race Springs - 220mm Length x 50 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 220mm Length x 50 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-220mm-length-x-50-n-mm-rate-x-61mm-id-single-t14-329861
Price: 103.36 USD
Availability: BackOrder

$103.36

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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: 220mm length, 50 N/mm rate, 61mm ID. Built for performance suspension setups.

Key Features

This is a single AST Linear Race Spring.
The spring measures 220mm in length.
It has a spring rate of 50 N/mm.
The inner diameter is 61mm, a popular size for performance coilovers.
Constructed from durable spring steel for consistent performance.

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About this part

Product Details

These AST Linear Race Springs are built with a 61mm inner diameter, a common size for many performance coilovers. The spring rate is set at 50 Newtons per millimeter, offering a firm yet controlled response for track or spirited driving. At 220mm in length, they provide a good balance for suspension travel without being excessively long.

Constructed from durable spring steel, these linear rate springs offer a consistent force throughout their compression. This means the spring behaves predictably, which is crucial for tuning suspension geometry and achieving optimal handling on the track or during aggressive cornering. The linear design ensures that as you compress the spring, the resistance increases proportionally, making it easier to dial in your vehicle's suspension characteristics.