What is the benefit of a Cr-Si spring material?

Cr-Si (Chromium-Silicon) is a strong and durable alloy commonly used in performance springs. It offers good fatigue resistance and maintains its shape under stress, which is important for consistent suspension performance.

What does a 450 lb/in spring rate mean for my car?

A 450 lb/in spring rate means that it takes 450 pounds of force to compress the spring by one inch. This rate generally offers a firmer ride than stock springs, improving body control during cornering and reducing squat during acceleration.

Does this spring come with any hardware?

This product listing is for the coilover spring only. Any necessary hardware, such as spring perches or insulators, would typically be sold separately or may be part of a complete coilover kit.

QA1 Coilover Spring 8" x 450 lb/in Black - 8HTM450B

Name: QA1 2-1/4in ID Cr-Si High Travel Spring 8in X 450 Lbs/in - Black Powder Coated
Brand: QA1
SKU: qa1-qa1-2-1-4in-id-cr-si-high-travel-spring-8in-x-450-lbs-in-black-powder-coated-t14-797935
Price: 86.73 USD
Availability: BackOrder

QA1 2-1/4in ID Cr-Si High Travel Spring 8in X 450 Lbs/in - Black Powder Coated

$86.73

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

QA1 is known for performance suspension components. This 2-1/4in ID coilover spring offers an 8" length and a 450 lb/in rate for improved handling.

Key Features

Fits 2-1/4 inch inner diameter applications.
Spring measures 8 inches in length.
Has a spring rate of 450 pounds per inch.
Constructed from Cr-Si material for strength.
Finished with a black powder coat for corrosion resistance.
Designed for high travel suspension systems.

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Product Details

QA1 has built a reputation for making solid performance suspension parts. This particular coilover spring is built with Cr-Si material for strength and durability, and it's finished with a black powder coat to resist corrosion. It features a 2-1/4 inch inner diameter and an 8-inch length, with a spring rate of 450 pounds per inch. This spring is designed for high travel applications, meaning it can compress significantly while maintaining consistent force, which is key for keeping your tires planted on the road during aggressive driving or over uneven surfaces.

When you're looking to fine-tune your vehicle's suspension, choosing the right spring rate is crucial. A 450 lb/in rate is a popular choice for many performance builds, offering a noticeable improvement in body control without making the ride overly stiff for daily driving. The high travel design means it works well with adjustable coilovers, allowing for precise ride height and corner weighting adjustments. The black powder coating not only looks good but also adds a layer of protection against the elements.