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

A linear spring rate means the spring's resistance increases at a constant rate as it's compressed. This results in predictable suspension behavior, which is beneficial for performance driving and track use where consistent feedback is important.

What is the inner diameter of this spring?

This AST Linear Race Spring has an inner diameter of 61mm. This measurement is important to ensure it fits correctly onto the perch of your coilover shock absorber.

Are these springs sold individually or as a set?

These AST Linear Race Springs are sold individually. If you are replacing springs on a coilover system, you will typically need two springs per axle.

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-100-130-61
UPC: astAST-100-130-61

AST Linear Race Springs - 100mm Length x 130 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 100mm Length x 130 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-100mm-length-x-130-n-mm-rate-x-61mm-id-single-t14-329695
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

Linear spring rate provides consistent force throughout compression.
100mm length is suitable for various coilover applications.
130 N/mm spring rate offers a firm, track-oriented stiffness.
61mm inner diameter fits many common coilover shock bodies.
Designed for performance and track use where precise handling is needed.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

If you're building or rebuilding a performance suspension setup, choosing the right spring rate is key to getting the handling you want. These AST Linear Race Springs are designed for track-focused applications where precise control and predictable response are critical. The linear spring rate means that for every millimeter the spring compresses, it exerts the same amount of force, making suspension behavior very consistent under load.

This particular spring measures 100mm in length with a spring rate of 130 Newtons per millimeter, and it has a 61mm inner diameter, making it suitable for many coilover systems. AST is known for well-built suspension components, and these springs are made to handle the demands of spirited driving and track use. They offer a solid option for fine-tuning your vehicle's cornering ability and overall chassis balance.