What is a linear spring rate?

A linear spring rate means the spring's resistance to compression increases at a constant rate. For every millimeter the spring is compressed, it exerts the same amount of force, providing predictable suspension behavior.

What does the 61mm ID refer to?

The 61mm ID refers to the inner diameter of the spring. This measurement is important for ensuring the spring will fit correctly onto the shock body or perch of your coilover assembly.

Are these springs sold individually?

Yes, these AST Linear Race Springs are sold individually. You will need to purchase the correct quantity and rates to match your specific suspension setup requirements.

AST Linear Race Spring 80mm 100 N/mm 61mm ID AST-80-100-61

Name: AST Linear Race Springs - 80mm Length x 100 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-80mm-length-x-100-n-mm-rate-x-61mm-id-single-t14-329671
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 80mm Length x 100 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 - 80mm Length x 100 N/mm Rate x 61mm ID - Single

Key Features

Fits: Check manufacturer fitment data to confirm compatibility with your vehicle.
Spring Rate: 100 N/mm
Length: 80mm
Inner Diameter: 61mm
Type: Linear Race Spring

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Product Details

With a 100 N/mm spring rate and 80mm length, these AST Linear Race Springs are built for performance applications where precise suspension control is key. The 61mm inner diameter is a common size for many coilover setups, making them a versatile choice for builders looking to fine-tune their vehicle's handling. These springs are designed to provide a consistent force throughout their compression range, offering predictable feedback to the driver.

Crafted from high-tensile steel, these springs are made to withstand the rigors of track use and spirited driving. Their linear rate means that for every millimeter the spring is compressed, it exerts the same amount of force, which is crucial for predictable suspension geometry and consistent tire contact with the road. This predictability is what serious drivers look for when setting up a vehicle for optimal performance.

When selecting springs for a custom coilover build or a suspension upgrade, considering the spring rate, length, and inner diameter is essential for achieving the desired ride height and handling characteristics. These AST springs offer a solid option for those who understand the importance of spring selection in suspension tuning.