What is a linear spring rate?

A linear spring rate means the force the spring exerts increases directly in proportion to how much it's compressed. This makes the suspension's behavior very predictable and consistent, which is ideal for performance driving.

What does the 61mm ID refer to?

ID stands for Inner Diameter. This measurement tells you the diameter of the coilover shock body or perch that the spring is designed to fit onto. It's crucial for ensuring the spring sits correctly and securely.

Are these springs sold individually?

Yes, this listing is for a single AST Linear Race Spring. You will need to purchase the correct quantity for your vehicle's suspension setup, typically two or four.

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Specifications

Brand: AST
Part #: AST-140-190-61
UPC: astAST-140-190-61

AST Linear Race Springs - 140mm Length x 190 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 140mm Length x 190 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-140mm-length-x-190-n-mm-rate-x-61mm-id-single-t14-329781
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.

AST Linear Race Springs are well-built coilover springs for performance tuning. They offer a 190 N/mm rate for improved handling.

Key Features

Fits coilovers with a 61mm inner diameter.
Linear spring rate of 190 N/mm for consistent suspension response.
Spring length is 140mm.
Designed for performance tuning and track applications.
Well-built for reliable performance.

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About this part

Product Details

If you're looking to fine-tune your suspension for track days or spirited driving, these AST Linear Race Springs are a solid option. They're designed to work with 61mm ID coilovers, giving you a specific rate of 190 N/mm over a 140mm length. This setup is all about giving you a more controlled and responsive feel when you're pushing your car's limits.

These springs are built with a consistent rate throughout their travel, which helps maintain predictable handling under hard cornering. The 190 N/mm rate is a noticeable step up from stock, offering a firmer ride that reduces body roll and keeps the tires planted. Because they're linear, the spring force increases directly with compression, making it easier to understand and manage your car's behavior on the track. They fit right into many popular coilover systems that use a 61mm inner diameter spring perch.