What does a 140 N/mm spring rate mean for my car's handling?

A 140 N/mm spring rate is a relatively firm rate, meaning it will resist compression more strongly than a softer spring. This typically results in reduced body roll during cornering and a more direct feel from the suspension, which can improve handling precision.

Will these springs fit my existing coilovers?

These springs have a 61mm inner diameter, which is a common size for many performance coilover systems. It's important to measure your existing spring perch diameter to ensure compatibility before purchasing.

Are these springs sold individually or as a set?

This listing is for a single spring. If you are replacing or upgrading coilover springs, you will typically need two springs per axle (front or rear) for proper balance and handling.

AST Linear Race Spring 180mm 140 N/mm 61mm ID AST-180-140-61

Name: AST Linear Race Springs - 180mm Length x 140 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-180mm-length-x-140-n-mm-rate-x-61mm-id-single-t14-329837
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 180mm Length x 140 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: 180mm length, 140 N/mm rate, 61mm ID. Built for performance suspension setups.

Key Features

Fits vehicles with 61mm ID coilover perches.
Features a linear spring rate of 140 N/mm for consistent damping.
Measures 180mm in length, suitable for many performance coilover applications.
Constructed from high-tensile steel for durability.
Designed for performance suspension tuning and track use.

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Product Details

With a 140 N/mm spring rate and a 180mm length, these AST Linear Race Springs are built for serious suspension tuning. The 61mm inner diameter is a common size for many performance coilover applications, making them a versatile choice for builders looking to fine-tune their vehicle's handling characteristics. These springs are designed to provide a consistent and predictable spring rate throughout their travel, which is crucial for achieving optimal grip and control during spirited driving or track use.

Constructed from high-tensile steel, these springs are made to withstand the rigors of performance driving. The linear rate means that for every millimeter the spring is compressed, it exerts the same amount of force, allowing for predictable suspension response. This predictability is key for setting up a suspension that feels balanced and responsive, whether you're cornering hard or navigating uneven surfaces. They are a solid option for anyone rebuilding or upgrading their coilover system and seeking a specific spring rate to match their performance goals.