What is a linear rate spring?

A linear rate spring increases its resistance to compression at a constant rate. This means for every inch the spring is compressed, it pushes back with the same amount of force, offering predictable handling.

What does the 61mm ID mean for my coilovers?

The 61mm ID refers to the inner diameter of the spring. This measurement is important to ensure the spring fits correctly onto the shock body and perch of your coilover assembly.

Are these springs suitable for daily driving?

While these springs offer precise control, their 120 N/mm rate is significantly stiffer than most stock or comfort-oriented springs. They are primarily intended for performance applications where a firmer ride is acceptable for improved handling.

AST Linear Race Spring 200mm 120 N/mm 61mm ID AST-200-120-61

Name: AST Linear Race Springs - 200mm Length x 120 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-200mm-length-x-120-n-mm-rate-x-61mm-id-single-t14-329855
Price: 103.36 USD
Availability: BackOrder

AST Linear Race Springs - 200mm Length x 120 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 - 200mm Length x 120 N/mm Rate x 61mm ID - Single

Key Features

Fits coilovers with a 61mm inner diameter.
Linear spring rate of 120 N/mm offers consistent damping characteristics.
Spring length is 200mm.
Designed for performance driving and track use.
Well-built by AST for reliable performance.

Secure CheckoutFast Shipping631-982-0042

Product Details

If you're looking to fine-tune your suspension for track use or spirited driving, a linear rate spring like this one from AST is a solid choice. This spring measures 200mm in length with a spring rate of 120 Newtons per millimeter, and it has a 61mm inner diameter, making it suitable for many coilover applications where precise control is needed.

Linear rate springs offer a consistent force increase as they compress, meaning the further you push the suspension, the stiffer it gets in a predictable way. This predictability is key for setting up a car that handles well on the limit. AST is known for well-built suspension components, and these springs are made to handle the demands of performance driving, offering a noticeable improvement in cornering stability and responsiveness compared to softer, progressive springs.

When installing these springs, remember that the 61mm inner diameter is a common size for many performance coilovers, but it's always a good idea to double-check your existing coilover setup to ensure compatibility. Proper installation is crucial for achieving the intended suspension performance and safety.