What is the purpose of the spring rate (225 lbs/in)?

The spring rate determines how much force is needed to compress the spring. A 225 lb/in rate means it takes 225 pounds of force to compress the spring by one inch. This rate helps control how your vehicle handles bumps and corners.

What does the 2.5-inch ID refer to?

ID stands for Inner Diameter. This measurement is critical for ensuring the spring fits correctly onto the shock absorber body. This spring is designed for shock bodies with a 2.5-inch diameter.

Does this spring come with any hardware?

This product is for the coilover spring only. Any necessary hardware, such as spring perches or collars, would typically be part of the shock absorber assembly or sold separately.

Fox Coilover Spring 12in 2.5in ID 225lb Silver 039-24-225-D

Name: Fox Coilover Spring 12.000 TLG X 2.500 ID X 225 lbs/in. Silver
Brand: FOX
SKU: fox-fox-coilover-spring-12-000-tlg-x-2-500-id-x-225-lbs-in-silver-t14-178888
Price: 101.00 USD
Availability: BackOrder

Fox Coilover Spring 12.000 TLG X 2.500 ID X 225 lbs/in. Silver

$101.00

On Backorder

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

Fox Coilover Spring 12in x 2.5in ID x 225 lb/in. Silver.

Key Features

This is a 12-inch long coilover spring.
The spring has a 2.5-inch inner diameter.
It features a spring rate of 225 pounds per inch.
The spring is finished in silver.
Designed to work with specific Fox shock absorber bodies.

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Product Details

This 12-inch long coilover spring from Fox has an inner diameter of 2.5 inches and a spring rate of 225 pounds per inch. The silver finish is a nice touch, but what really matters is how this spring works with your Fox shocks. It’s designed to work with specific Fox shock bodies, ensuring proper fit and function for consistent damping performance. When you're building or rebuilding a suspension system, the right spring rate is crucial for controlling body roll and absorbing impacts. A 225 lb/in rate is a common choice for many performance applications, offering a noticeable improvement over stock without being overly stiff for daily driving.

Fox has been in the suspension game for a long time, and they know how to make a well-built spring. This one is made from strong steel and finished in silver to resist corrosion and look good. It’s a direct replacement for specific Fox shock absorber models, so you know it’s going to fit right and perform as expected. Choosing the correct spring rate is key to tuning your suspension for the kind of driving you do, whether that's hitting the trails or just enjoying a more responsive feel on the street.