What does a linear spring rate mean for my suspension?

A linear spring rate means the force required to compress the spring increases at a constant rate. This makes suspension behavior more predictable and easier to tune for specific handling characteristics.

What is the inner diameter of this spring?

This AST Linear Race Spring has an inner diameter of 61mm, which is a common size for many performance coilover shock bodies.

What kind of vehicle is this spring best suited for?

This spring is intended for performance-oriented vehicles and track applications where a stiffer, more controlled suspension response is desired. The 180 N/mm rate is a moderately stiff option.

Specifications

Brand: AST
Part #: AST-150-180-61
UPC: astAST-150-180-61

AST Linear Race Springs - 150mm Length x 180 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 150mm Length x 180 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-150mm-length-x-180-n-mm-rate-x-61mm-id-single-t14-329806
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 - 150mm Length x 180 N/mm Rate x 61mm ID - Single. For performance suspension builds.

Key Features

Fits coilover systems requiring a 61mm inner diameter spring.
Features a linear spring rate of 180 N/mm for consistent suspension response.
Measures 150mm in length, a common size for performance coilover applications.
Designed for track-focused vehicles and performance suspension builds.
Well-built components from AST for reliable performance.

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About this part

Product Details

If you're building a performance suspension setup or rebuilding your coilovers, a well-chosen spring rate is crucial for handling. These AST Linear Race Springs are designed for track-focused applications where precise control and predictable response are key. The linear rate means the spring compresses at a consistent rate throughout its travel, offering straightforward tuning for your suspension system.

This particular spring measures 150mm in length and has a spring rate of 180 Newtons per millimeter, which is a moderately stiff rate suitable for many performance cars. The 61mm inner diameter is a common size for many coilover bodies, making it a versatile option for custom builds or replacements. AST is known for producing well-built suspension components, and these springs are no exception, offering solid performance for demanding driving conditions.