What is the main benefit of the monotube design in this shock absorber?

The monotube design helps Bilstein shocks dissipate heat more effectively than twin-tube designs. This leads to more consistent damping performance, especially during spirited driving or when the suspension is working hard.

Do I need lowering springs to use this Bilstein shock absorber?

These Bilstein B8 Performance Plus dampers are specifically designed to be paired with aftermarket lowering springs. While they can be used with stock springs, you'll get the most benefit in terms of handling and appearance when combined with a lowering spring setup.

Does this shock absorber come with any hardware?

This product includes the rear shock absorber. It is recommended to refer to the manufacturer's installation instructions for any additional hardware that may be required for installation.

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Specifications

Brand: Bilstein
Part #: 24-232975
UPC: 651860730431
Package Length: 22.4 in
Package Width: 2.9 in
Package Height: 2.9 in
Package Weight: 3.15 lb
Interchange Part Numbers: 24-232968, 8041-1409Sport, CV6Z 18125-L

Bilstein B8 13-18 Ford Focus ST L4 2.0L Rear Shock Absorber

Name: Bilstein B8 13-18 Ford Focus ST L4 2.0L Rear Shock Absorber
Brand: Bilstein
SKU: bilstein-bilstein-b8-13-18-ford-focus-st-l4-2-0l-rear-shock-absorber-t14-4312838
Price: 153.45 USD
Availability: BackOrder

$153.45

On Backorder — Expected to ship by May 15, 2026

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

Fits 2013-2018 Ford Focus ST. Bilstein B8 rear shock absorber designed for lowering springs, improving handling and looks.

Key Features

Fits 2013-2018 Ford Focus.
Monotube design for consistent damping performance.
Application-specific valve settings are tuned for performance.
Designed to pair with aftermarket lowering springs.
Enhances safety and handling when used with lowering springs.
Provides a sportier feel while maintaining comfort.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

The Bilstein B8 Performance Plus rear shock absorber is built with a monotube design, a key feature that helps dissipate heat more effectively than traditional twin-tube shocks. This means more consistent damping performance, especially when you're pushing your 2013-2018 Ford Focus ST hard.

These shocks are specifically tuned to work with lowering springs, which typically reduce ride height and stiffen the suspension. The B8 Performance Plus dampers are valved to complement these changes, offering an improved handling feel and a sportier stance without sacrificing too much comfort. They're a solid choice if you've already installed or plan to install lowering springs on your Focus ST, helping you get the most out of that setup.

Each damper undergoes rigorous testing to ensure it meets or exceeds original equipment standards. This attention to quality is what makes Bilstein a well-known name in performance suspension.