What is a linear spring rate?

A linear spring rate means that for every millimeter the spring is compressed, it exerts the same amount of force. This provides a predictable and consistent suspension response, which is beneficial for tuning handling characteristics.

What does the 61mm ID refer to?

ID stands for Inner Diameter. The 61mm ID indicates the size of the spring's opening, which needs to match the diameter of the shock body or perch it will sit on within a coilover assembly.

Is this spring sold individually or as a set?

This specific product listing is for a single spring. If you need a set for your vehicle's suspension, you will need to purchase multiple individual springs.

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Specifications

Brand: AST
Part #: AST-120-360-61
UPC: astAST-120-360-61

AST Linear Race Springs - 120mm Length x 360 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 120mm Length x 360 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-120mm-length-x-360-n-mm-rate-x-61mm-id-single-t14-329736
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

This product includes one AST Linear Race Spring.
The spring measures 120mm in length.
It features a spring rate of 360 N/mm, offering a firm and responsive suspension characteristic.
The inner diameter of the spring is 61mm, suitable for many coilover applications.
Designed for performance use where consistent spring action is important.

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About this part

Product Details

You get one AST Linear Race Spring, measuring 120mm in length with a spring rate of 360 Newtons per millimeter and a 61mm inner diameter. This spring is designed for performance applications where precise suspension control is crucial.

This spring is built with a focus on consistent performance. The linear rate means that as the spring compresses, the force it applies increases at a steady, predictable rate. This characteristic is important for tuning suspension response, allowing for fine adjustments to how the vehicle handles during cornering and over bumps. The 61mm inner diameter is a common size for many coilover systems, making it a versatile option for custom builds or replacements.

When installing or replacing coilover springs, always ensure you have the correct spring compressors and safety equipment. It's also a good idea to check the compatibility of the spring with your existing or planned coilover hardware to ensure a proper fit and function.