What is a linear spring rate?

A linear spring rate means the spring's resistance to compression increases at a constant rate. For every millimeter the spring is compressed, it pushes back with 360 Newtons of force. This offers predictable and consistent suspension behavior.

What does the 61mm ID refer to?

ID stands for Inner Diameter. The 61mm measurement indicates the inside diameter of the spring, which is important for ensuring it fits correctly onto the shock body or spring perch of a coilover assembly.

Is this spring sold individually?

Yes, this product is sold as a single spring unit. If you are rebuilding a coilover or need a matched set, you will need to order multiple springs.

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Specifications

Brand: AST
Part #: AST-100-360-61
UPC: astAST-100-360-61

AST Linear Race Springs - 100mm Length x 360 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 100mm Length x 360 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-100mm-length-x-360-n-mm-rate-x-61mm-id-single-t14-329710
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

Verified fitment for coilover applications.
Linear spring rate of 360 N/mm for consistent force application.
100mm length.
61mm inner diameter.
Single spring unit.

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About this part

Product Details

AST is known for making high-performance suspension components. This linear race spring is a single unit designed for coilover applications. It measures 100mm in length with a spring rate of 360 Newtons per millimeter and a 61mm inner diameter.

This spring is built for demanding use where precise suspension control is critical. Its linear rate means the spring force increases consistently as it compresses, offering predictable handling characteristics. The 61mm inner diameter is a common size for many coilover setups, making it a versatile option for custom builds or replacements.