What is a linear spring rate and why is it important?

A linear spring rate means the force the spring exerts increases proportionally to how much it's compressed. This predictability is important for achieving balanced handling and consistent suspension behavior during cornering and braking.

What does the 61mm ID refer to?

ID stands for Inner Diameter. The 61mm measurement indicates the diameter of the coilover shock body or perch that this spring is designed to fit onto.

What is the difference between linear and progressive springs?

Linear springs have a constant rate of force increase as they compress, offering predictable behavior. Progressive springs start with a softer rate and become stiffer as they compress, which can offer a more comfortable ride over small bumps but less predictable response under heavy load.

AST Linear Race Spring 180mm 130 N/mm 61mm ID AST-180-130-61

Name: AST Linear Race Springs - 180mm Length x 130 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-180mm-length-x-130-n-mm-rate-x-61mm-id-single-t14-329836
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 180mm Length x 130 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, 130 N/mm rate, 61mm ID. Built for performance suspension setups.

Key Features

Fits coilover systems with a 61mm inner diameter.
Features a linear spring rate of 130 N/mm for consistent suspension response.
Measures 180mm in length, suitable for various performance suspension builds.
Designed for performance and track applications where precise handling is key.

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Product Details

With a 130 N/mm spring rate and a 180mm length, this AST Linear Race Spring is built for serious suspension tuning. The 61mm inner diameter is a common size for many performance coilover systems, making it a versatile option for builders looking to fine-tune their vehicle's handling characteristics. Linear springs offer a consistent spring rate throughout their compression, meaning the force applied increases predictably as the suspension compresses. This predictability is crucial for achieving balanced handling and responsive feedback from your vehicle's chassis.

Crafted with performance in mind, these springs are designed to work within a performance suspension setup. The linear rate ensures that the suspension behaves consistently under load, which can lead to improved cornering stability and a more connected feel to the road. Whether you're building a track-focused machine or simply want to improve your car's road manners with a more precise suspension response, this AST spring is a well-built component to consider.