Do I need to buy new springs for these Bilstein B6 struts?

No, the Bilstein B6 struts are designed to be paired with your vehicle's original factory springs. This makes them a straightforward upgrade without requiring additional parts for the springs.

What is the advantage of a monotube design?

A monotube design separates the oil and gas within the strut. This helps prevent foaming under heavy use, ensuring more consistent damping performance and better control, especially during spirited driving or emergency maneuvers.

How does this strut assembly improve safety?

By providing improved grip and enhanced lane stability, the Bilstein B6 strut assembly helps your vehicle respond more predictably. This can be particularly beneficial during sudden braking, evasive steering, or when driving in challenging conditions.

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Specifications

Brand: Bilstein
Part #: 24-249485
UPC: 651860769585

Bilstein B6 2015-2017 Subaru WRX - STI Rear Monotube Strut Assembly

Name: Bilstein B6 2015-2017 Subaru WRX - STI Rear Monotube Strut Assembly
Brand: Bilstein
SKU: bilstein-bilstein-b6-2015-2017-subaru-wrx-sti-rear-monotube-strut-assembly-t14-95884
Price: 160.36 USD
Availability: BackOrder

$160.36

On Backorder — Expected to ship by May 29, 2026

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

Fits 2015-2021 Subaru WRX/STI. Bilstein B6 rear monotube strut assembly for improved handling and stability.

Key Features

Fits 2015-2021 Subaru WRX and WRX STI.
Monotube design with Bilstein gas-pressure technology for consistent damping.
Vehicle-specific valve settings improve handling and lane stability.
Designed to work with factory springs, simplifying installation.
Offers improved safety and grip in various driving conditions.

⚠️ 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

No-fit, no charge. Wrong part? Send it back, free return label.

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About this part

Product Details

The Bilstein B6 monotube design uses gas pressure to keep the fluid and gas separated, which helps prevent foaming and ensures consistent damping performance. This is a direct replacement for your rear strut assembly on your 2015-2021 Subaru WRX and WRX STI, designed to work with your factory springs. It's a well-built upgrade that brings out the best handling your car can offer, improving grip and stability whether you're navigating daily commutes or more demanding driving situations.

Bilstein tunes each B6 damper specifically for the vehicle it's going on, meaning this strut assembly is valved to match the characteristics of your WRX or STI. This vehicle-specific tuning helps deliver improved safety and better lane stability without needing to change your existing springs. You'll notice a difference in how the car feels, especially during cornering and quick maneuvers, all while maintaining a comfortable ride.