What is a linear spring rate?

A linear spring rate means that for every millimeter the spring is compressed, the force it exerts increases by a set amount, in this case, 55 Newtons. This provides predictable suspension behavior.

How many springs are included in this purchase?

This listing is for a single spring. You will need to purchase the appropriate quantity for your specific coilover setup, typically two or four.

What does the 61mm ID refer to?

The 61mm ID refers to the inner diameter of the spring. This measurement is important for ensuring the spring fits correctly onto the shock body or spring perch of your coilover system.

AST Linear Race Spring 180mm 55N/mm 61mm ID AST-180-55-61

Name: AST Linear Race Springs - 180mm Length x 55 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-180mm-length-x-55-n-mm-rate-x-61mm-id-single-t14-329824
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 180mm Length x 55 N/mm Rate x 61mm ID - Single

$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.

AST Linear Race Springs - 180mm Length x 55 N/mm Rate x 61mm ID - Single

Key Features

This product includes one (1) AST Linear Race Spring.
Spring measures 180mm in length.
Spring rate is 55 N/mm.
Inner diameter is 61mm.
Linear spring design offers consistent force increase with compression.

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Product Details

This listing is for a single AST Linear Race Spring. You get one spring, measuring 180mm in length with a spring rate of 55 Newtons per millimeter and an inner diameter of 61mm. These springs are designed for performance applications where precise suspension control is needed.

The linear spring design means that as the spring is compressed, the force it exerts increases at a constant rate. This predictable behavior is crucial for tuning suspension setups for track use or spirited driving. The 55 N/mm rate offers a firmer ride than stock, helping to reduce body roll and improve handling response during cornering. The 61mm inner diameter is a common size for many aftermarket coilover systems, making it a versatile option for builders and tuners.

When building or rebuilding coilovers, selecting the right spring rate is key to achieving your desired suspension characteristics. This single spring is part of a system, so ensure you have the correct quantity and complementary components for your specific application.