What does a 400 lb/in spring rate mean for my vehicle?

A 400 lb/in spring rate means that for every inch the spring is compressed, it will exert 400 pounds of force. This rate is firmer than most stock springs, which can lead to improved handling, reduced body roll, and a more stable feel, especially on heavier vehicles or during spirited driving.

What is the inner diameter of this coilover spring?

This Fox coilover spring has an inner diameter of 2.5 inches. It is designed to fit coilover shock bodies with this specific diameter.

Does this spring come with any hardware?

This product is for the coilover spring only. Any necessary hardware, such as spring seats or collars, would typically be part of the complete coilover assembly or purchased separately.

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Fox Coilover Spring 16.000 TLG X 2.50 ID X 400 lbs/in. Silver

Specifications

Brand: FOX
Part #: 039-40-400-A

Fox Coilover Spring 16.000 TLG X 2.50 ID X 400 lbs/in. Silver

Name: Fox Coilover Spring 16.000 TLG X 2.50 ID X 400 lbs/in. Silver
Brand: FOX
SKU: fox-fox-coilover-spring-16-000-tlg-x-2-50-id-x-400-lbs-in-silver-t14-178945
Price: 160.00 USD
Availability: InStock

$160.00

Only 2 left in stock

Fox Coilover Spring 16" L x 2.5" ID x 400 lb/in. Silver.

Key Features

Fits 2.5 inch inner diameter coilover bodies.
Spring measures 16 inches in length.
Spring rate is 400 pounds per inch.
Silver finish for corrosion resistance.
Manufactured by Fox.

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Product Details

If you're looking to fine-tune your vehicle's suspension for a specific ride height or handling characteristic, a replacement coilover spring like this one from Fox can make a notable difference. This spring is designed for 2.5-inch inner diameter coilover bodies and measures 16 inches in length, with a spring rate of 400 pounds per inch. This rate offers a firmer feel than stock, which can help reduce body roll during cornering and improve stability on rougher terrain.

Fox is well-known for its suspension components, and this spring is built to handle the demands of off-road or performance driving. The silver finish not only looks good but also offers a layer of protection against the elements. When selecting a spring, consider your vehicle's weight and your intended use – a higher spring rate like this 400 lb/in option is generally suited for heavier vehicles or those seeking a more responsive feel.