What does a linear spring rate mean?

A linear spring rate means that for every millimeter the spring is compressed, the force it exerts increases by a consistent amount (40 N/mm in this case). This provides predictable handling and suspension behavior.

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 coilover applications.

What kind of vehicle is this spring intended for?

This spring is designed for performance and racing applications, typically used in custom or aftermarket coilover suspension systems where precise tuning is desired.

Specifications

Brand: AST
Part #: AST-220-40-61
UPC: astAST-220-40-61

AST Linear Race Springs - 220mm Length x 40 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 220mm Length x 40 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-220mm-length-x-40-n-mm-rate-x-61mm-id-single-t14-329859
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 - 220mm Length x 40 N/mm Rate x 61mm ID - Single. A well-built spring for performance suspension setups.

Key Features

Fits aftermarket coilover systems with a 61mm inner diameter.
Features a linear spring rate of 40 N/mm for predictable suspension response.
Measures 220mm in length, a common size for performance suspension setups.
Constructed for durability and consistent performance.
Single spring unit for custom suspension builds or replacements.

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About this part

Product Details

This is a single AST Linear Race Spring, measuring 220mm in length with a spring rate of 40 N/mm and a 61mm inner diameter. These springs are designed for performance applications where precise suspension control is crucial. The linear rate means that as the spring is compressed, the force increases at a constant, predictable rate, which is essential for consistent handling and feedback from your vehicle's suspension.

AST is known for producing well-built suspension components, and these springs are no exception. The 40 N/mm rate offers a firmer ride than stock, providing improved body control during cornering and braking. The 61mm inner diameter is a common size for many aftermarket coilover systems, making it a versatile option for builders and racers looking to fine-tune their suspension setup. When choosing springs, consider how the rate will affect your vehicle's ride comfort and handling characteristics.