What does a 90 N/mm spring rate mean for my car's handling?

A 90 N/mm spring rate indicates a stiffer spring compared to stock. This means it will resist compression more strongly, leading to a firmer ride and improved body control during cornering and braking. It's a common choice for track cars or performance builds where precise handling is prioritized.

Will these springs fit my existing coilovers?

These springs have a 61mm inner diameter. You'll need to ensure your coilover perches or hardware are also 61mm to achieve a proper fit. It's always best to measure your existing setup or consult your coilover manufacturer's specifications.

Are these springs sold individually or as a set?

This product listing is for a single spring. If you are replacing springs on a vehicle, it is generally recommended to replace them in pairs (front or rear) to maintain balanced suspension performance.

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Specifications

Brand: AST
Part #: AST-150-90-61
UPC: astAST-150-90-61

AST Linear Race Springs - 150mm Length x 90 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 150mm Length x 90 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-150mm-length-x-90-n-mm-rate-x-61mm-id-single-t14-329797
Price: 85.50 USD
Availability: InStock

$85.50

Only 2 left in stock

AST Linear Race Springs: 150mm length, 90 N/mm rate, 61mm ID. Built for precise suspension tuning.

Key Features

Fits vehicles with 61mm inner diameter coilover perches.
Features a linear spring rate of 90 N/mm for consistent suspension response.
Measures 150mm in length, suitable for various coilover applications.
Constructed from high-tensile steel for durability under load.
Designed for performance tuning and track-oriented setups.

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About this part

Product Details

Starting with a 90 N/mm spring rate and a 150mm length, these AST Linear Race Springs are built for drivers who need to dial in their suspension's performance. The 61mm inner diameter is a common size for many performance coilovers, making it a versatile option for custom setups or replacements. These springs are designed to provide consistent damping characteristics across their travel, which is crucial for predictable handling during spirited driving or track use.

Crafted 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 compresses, it exerts the same amount of force, offering a straightforward way to tune your vehicle's ride and handling. This consistency helps maintain tire contact with the road, improving grip and control when you need it most.