What is a linear spring rate?

A linear spring rate means that for every inch the spring is compressed, the force it exerts increases by a consistent amount. This provides predictable and direct feedback during suspension travel, which is beneficial for performance driving.

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 will properly fit onto the shock absorber body or perch of your coilover system.

Is this spring sold individually or as a set?

This specific product listing is for a single spring. If you need a set for your vehicle's suspension, you will need to purchase multiple individual springs.

AST Linear Race Spring 220mm 55N/mm 61mm ID AST-220-55-61

Name: AST Linear Race Springs - 220mm Length x 55 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-220mm-length-x-55-n-mm-rate-x-61mm-id-single-t14-329862
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 220mm Length x 55 N/mm Rate x 61mm ID - Single

$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 - 220mm Length x 55 N/mm Rate x 61mm ID - Single

Key Features

This product is a single AST Linear Race Spring.
Spring length is 220mm.
Spring rate is 55 N/mm.
Inner diameter is 61mm.
Linear spring rate offers predictable suspension response.

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Product Details

This listing is for a single AST Linear Race Spring. You get one spring, measuring 220mm in length with a spring rate of 55 Newtons per millimeter and an inner diameter of 61mm. These springs are designed for performance applications where a specific, consistent spring rate is crucial for handling and suspension response.

Linear rate springs are known for their predictable behavior. As the spring compresses, the force increases in a direct, linear proportion to the amount of travel. This makes them a popular choice for racing and track-day setups because they offer consistent feedback to the driver, allowing for more precise control during cornering and braking. The 61mm inner diameter is a common size for many coilover systems, but it's always best to double-check your existing setup to ensure compatibility.

When building or rebuilding a performance suspension system, choosing the right spring rate is key to achieving the desired handling characteristics. This AST spring offers a well-built option for those looking to fine-tune their vehicle's suspension for track use or spirited driving.