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

A linear spring rate means the spring's resistance to compression is constant. For every inch the spring compresses, it pushes back with the same amount of force. This results in predictable handling and consistent feedback from your suspension.

How do I know if this 61mm ID spring will fit my coilovers?

The 61mm inner diameter (ID) is a common size for many performance coilover systems. It's best to measure the inner diameter of your existing springs or consult your coilover manufacturer's specifications to ensure compatibility.

What is the benefit of a 45 N/mm spring rate?

A 45 N/mm spring rate is considered moderately stiff. It helps to reduce body roll during cornering and improves responsiveness, offering a more connected feel to the road, which is beneficial for performance driving and track use.

AST Linear Race Spring 250mm 45 N/mm 61mm ID AST-250-45-61

Name: AST Linear Race Springs - 250mm Length x 45 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-250mm-length-x-45-n-mm-rate-x-61mm-id-single-t14-329875
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 250mm Length x 45 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 - 250mm Length x 45 N/mm Rate x 61mm ID - Single

Key Features

Fits vehicles with 61mm inner diameter coilover bodies.
Linear spring design offers consistent force throughout compression.
Spring rate of 45 N/mm provides improved body control for performance driving.
Spring length is 250mm, a common size for performance coilovers.
Designed for track use and performance suspension tuning.

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Product Details

When you're rebuilding your suspension or looking to fine-tune your coilover setup for track use, selecting the right spring rate is crucial. These AST Linear Race Springs are built for performance applications where precise control and predictable handling are key. The linear spring design means that for every inch the spring compresses, it exerts the same amount of force, offering a consistent feel throughout its travel.

This particular spring measures 250mm in length with a 45 N/mm spring rate and a 61mm inner diameter. The 45 N/mm rate is a moderately stiff option, suitable for vehicles where improved body control is desired without an overly harsh ride. The 61mm ID is a common size for many performance coilovers, making it a versatile choice for custom builds or replacements. AST is known for well-built suspension components, and these springs are no exception, offering a solid option for racers and serious track enthusiasts looking to optimize their vehicle's handling characteristics.