What is a linear spring rate?

A linear spring rate means the spring compresses at a constant rate for every pound of force applied. This offers predictable suspension behavior, which is beneficial for performance tuning and track use.

What does the 61mm ID mean for my coilovers?

The 61mm inner diameter (ID) refers to the size of the spring where it fits onto the shock body. This is a common size for many performance coilover systems, but you should always verify it matches your specific shock absorber.

Are these springs sold individually?

Yes, these AST Linear Race Springs are sold individually. You will need to purchase the correct quantity for your application, typically two or four springs depending on your suspension setup.

Specifications

Brand: AST
Part #: AST-100-380-61
UPC: astAST-100-380-61

AST Linear Race Springs - 100mm Length x 380 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 100mm Length x 380 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-100mm-length-x-380-n-mm-rate-x-61mm-id-single-t14-329711
Price: 103.36 USD
Availability: BackOrder

$103.36

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AST Linear Race Springs: 100mm length, 380 N/mm rate, 61mm ID. Ideal for performance builds needing precise spring rates.

Key Features

Fits: Check manufacturer fitment data to confirm compatibility with your vehicle.
Spring Rate: 380 N/mm provides a firm, performance-oriented spring rate.
Length: 100mm length is suitable for many performance coilover applications.
Inner Diameter: 61mm ID is a common size for performance suspension components.
Type: Linear spring rate offers predictable and consistent suspension response.
Brand: AST is a well-known name in performance suspension.

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About this part

Product Details

With a 380 N/mm spring rate and a 100mm length, these AST Linear Race Springs are built for serious performance applications where precise suspension control is key. The 61mm inner diameter is a common size for many performance coilovers, making them a versatile option for custom setups or replacements. These springs are designed to work with coilover systems, providing a consistent and predictable spring rate across their travel. This means you get a well-defined suspension response, which is crucial for handling during spirited driving or track use.

The linear rate means the spring compresses at a constant rate under load, offering predictable suspension behavior. This is a step up from stock springs, which often have progressive rates that can feel less direct. AST is known for producing well-built suspension components, and these springs are no exception. They are made to withstand the rigors of performance driving, offering durability and consistent performance over time. If you're building a custom coilover setup or replacing worn-out springs on a performance vehicle, these offer a solid option for achieving your desired suspension tuning.