What does a linear spring rate mean for my suspension?

A linear spring rate means the force the spring exerts increases directly with compression. This provides predictable handling and allows for precise tuning of your suspension's response to road conditions and driver inputs.

What is the inner diameter (ID) of this spring?

This AST Linear Race Spring has an inner diameter of 61mm. This is a common size for many performance coilover systems, but it's always best to verify compatibility with your specific shock absorber.

Can I mix and match spring rates with these?

Yes, these springs are sold individually, which allows you to create custom spring rate setups. You can use different rates on the front and rear axles, or even on opposite sides if your suspension design allows for it, to fine-tune your vehicle's handling characteristics.

Specifications

Brand: AST
Part #: AST-250-120-61
UPC: astAST-250-120-61

AST Linear Race Springs - 250mm Length x 120 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 250mm Length x 120 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-250mm-length-x-120-n-mm-rate-x-61mm-id-single-t14-329888
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.

Key Features

Fits vehicles with compatible coilover systems requiring a 61mm ID spring.
Linear spring rate of 120 N/mm offers consistent and predictable suspension response.
Spring length is 250mm, suitable for various coilover shock absorber designs.
Inner diameter is 61mm, a common size for many performance suspension setups.
Sold individually, allowing for custom spring rate configurations or replacement of a single damaged spring.

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About this part

Product Details

This is a single AST Linear Race Spring. It measures 250mm in length, has a spring rate of 120 Newtons per millimeter, and an inner diameter of 61mm. These springs are designed for performance applications where a specific and consistent spring rate is crucial for handling and suspension response.

The linear spring rate means that as the spring is compressed, the force it exerts increases proportionally. This predictable behavior is important for tuning suspension setups, especially in racing or track-day vehicles where precise control over body roll and weight transfer is needed. The 61mm inner diameter is a common size for many coilover systems, making it a versatile option for builders and tuners.