What does a linear spring rate mean for my car's handling?

A linear spring rate means the spring's resistance to compression increases at a constant rate. This provides predictable and consistent handling, which is beneficial for performance driving as the suspension behaves the same way throughout its travel.

What is the inner diameter (ID) of this spring?

This AST Linear Race Spring has an inner diameter of 61mm. This is a common size for many performance coilover systems, but it's always best to measure your existing spring or shock body to ensure compatibility.

Can I mix and match these springs with other brands?

While the 61mm ID is a standard size, mixing springs from different manufacturers or with different rates is generally not recommended. For optimal performance and safety, it's best to use matched sets of springs designed to work together on your specific suspension setup.

FEATURED BRAND = COVERKING CHECK OUT COVERKING NOW →

Questions? Call Us:631-982-0042

M-F 8AM-4PM ET

Trusted Since 1957

Est. 1957

Specifications

Brand: AST
Part #: AST-150-340-61
UPC: astAST-150-340-61

AST Linear Race Springs - 150mm Length x 340 N/mm Rate x 61mm ID - Single

Name: AST Linear Race Springs - 150mm Length x 340 N/mm Rate x 61mm ID - Single
Brand: AST
SKU: ast-ast-linear-race-springs-150mm-length-x-340-n-mm-rate-x-61mm-id-single-t14-329815
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

Fits vehicles with 61mm inner diameter coilover applications.
Linear spring rate of 340 N/mm offers consistent suspension response.
Spring length is 150mm, suitable for many performance coilover designs.
Single spring unit for replacement or custom suspension builds.
Manufactured by AST, a known name in performance suspension components.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

This is a single AST Linear Race Spring, measuring 150mm in length with a spring rate of 340 Newtons per millimeter and a 61mm inner diameter. These springs are designed for performance applications, often used in coilover setups where precise suspension control is critical. The linear rate means the spring's resistance increases consistently as it's compressed, providing predictable handling characteristics.

Built for demanding use, these springs are a solid option for those looking to fine-tune their vehicle's suspension for track days or spirited driving. The 61mm inner diameter is a common size for many performance coilover systems, making it a versatile choice for custom builds or replacements. When selecting springs, matching the rate to your vehicle's weight and intended use is key for optimal performance and ride quality.