What does a linear spring rate mean for my car's handling?

A linear spring rate means the force the spring exerts increases proportionally to how much it's compressed. This offers consistent and predictable suspension behavior, which is beneficial for performance driving and racing applications where precise control is needed.

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 systems, but it's always best to measure your existing shock body to ensure a proper fit.

Is this spring suitable for daily driving?

With a rate of 160 N/mm, this spring is quite firm and generally intended for performance or racing applications. While it can be used on a street car, it will result in a significantly stiffer ride compared to stock suspension, potentially reducing comfort during daily driving.

FEATURED BRAND = COVERKING CHECK OUT COVERKING NOW →

Questions? Call Us:631-982-0042

M-F 8AM-4PM ET

Trusted Since 1957

Est. 1957

Specifications

Brand: AST
Part #: AST-140-160-61
UPC: astAST-140-160-61

AST Linear Race Springs - 140mm Length x 160 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 140mm Length x 160 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-140mm-length-x-160-n-mm-rate-x-61mm-id-single-t14-329778
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 160 N/mm for predictable suspension response.
Spring length is 140mm.
Sold individually.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

This is a single AST Linear Race Spring, measuring 140mm in length with a spring rate of 160 N/mm and a 61mm inner diameter. These springs are designed for performance applications where precise suspension control is crucial.

The linear spring rate means that as the spring is compressed, the force it exerts increases at a constant rate. This predictable behavior is favored in racing and performance setups for consistent handling and feedback. The 61mm inner diameter is a common size for many coilover systems, making it a versatile option for builders and tuners looking to customize their suspension.

When selecting springs, consider the overall weight of your vehicle and your intended use. A 160 N/mm rate is a firm setting, suitable for track use or spirited driving where reduced body roll and sharper response are desired. Always ensure compatibility with your existing or planned coilover shock bodies.