Powerflex Black Series Polyurethane Front Lower Wishbone Rear Bush (Control

Powerflex Black Series Front Arm Rear Position Bushes for BMW F-Series xDrive

Sharpen your BMW’s front end with these high-performance polyurethane bushes designed for the rear position of the front lower wishbone on xDrive models. By replacing ageing rubber with Powerflex Black Series material, you gain tighter alignment control under load, noticeably crisper turn-in and more confidence under braking. It is a proven, durable upgrade that helps stabilise geometry and can reduce uneven tyre wear. We run these on our own cars and customer builds, and the feedback is consistently positive for fast B-road driving and daily use.

Key benefits

• Improves steering precision, road feel and straight-line stability.
• Controls unwanted arm movement at the arm-to-body connection for repeatable alignment.
• Enhances chassis response during cornering and heavy braking.
• Direct replacement for the factory rubber mount for a clean, reliable install.

Vehicle coverage

• BMW 1 Series: F20, F21 xDrive (2011–2019)
• BMW 2 Series: F22, F23 xDrive (2013– )
• BMW 3 Series: F3X xDrive
• BMW 4 Series: F32, F33, F36 xDrive (2013– )

Location: front lower wishbone rear mount on BMW F-Series xDrive models.

Cross references

• Replaces OE: 31126854723
• Replaces OE: 31126854724

Box contents

2 x bushes. Quantity required per car: 2.

Part number

PFF5-4102BLK

Fitting and support

Professional installation available at MJ Modifications, Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

For peace of mind, we can run a compatibility check before dispatch using your UK registration number or the last 7 of your VIN. Add your vehicle details at checkout.

Why enthusiasts choose this upgrade

Customers report a firmer, more connected front end with better mid-corner stability and repeatable alignment settings compared with tired factory bushes. It is a smart, cost-effective suspension refresh that complements other handling upgrades and helps keep your BMW feeling precise for longer.

Search-friendly terms

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Manufactured by Powerflex.