Powerflex PFF5-901 Front Lower Control/Radius Arm to Chassis Bush for BMW X3 E83 (2003-2010) & X5 E53 (1999-2006) - Polyurethane Road Series Suspension

BMW X3 E83 and X5 E53 Front Tension Strut Inner Bush Upgrade | Powerflex PFF5-901

Transform front-end feel and stability with this pair of Powerflex Road Series poly bushes for the front axle tension strut, also known as the caster arm, thrust arm, or front wishbone rear mount. PFF5-901 replaces the factory rubber mount at the chassis side, giving tighter steering, cleaner turn-in and confidence under braking without adding harshness. A smart OE replacement that lasts longer than tired rubber, perfect for daily use and spirited road driving.

• Reduces unwanted movement in the front arm for precise handling and improved tracking
• More consistent caster control for better straight-line stability and cornering accuracy
• Helps minimise uneven tyre wear by keeping geometry stable
• Durable polyurethane construction for long service life and dependable performance
• Direct-fit replacement mount for the BMW front arm inner bushing position

What you receive

• 2 x front arm inner bushes, one per side of the vehicle
• Diagram reference: 1
• Powerflex Road Series specification

Fitment

• BMW X3 E83, 2003 to 2010
• BMW X5 E53, 1999 to 2006

Cross-references

• Replaces OE numbers: 31126769715, 31103412781
• Powerflex part number: PFF5-901

Why enthusiasts choose this upgrade

Our workshop has installed these bushes on our own builds and customer cars with excellent results: firmer front-end support, clearer steering feedback and a planted feel over British B-roads. A proven solution for drivers seeking a reliable handling upgrade that still remains comfortable for commuting.

Installation and support

Professional fitting recommended. MJ Modifications in Warwickshire offers in-house installation and geometry setup. Request a fitting quote at info@mjmodifications.co.uk.

Download the installation guide

Fitment check before despatch

We verify compatibility prior to shipping. Add your UK registration or last 7 characters of the VIN at checkout so you receive the correct front arm inner bushes for your vehicle.

Search-friendly terms

BMW X3 E83 front arm inner bushing, BMW X5 E53 caster arm bush, thrust arm bush kit, front wishbone rear mount, tension strut chassis mount, poly bush upgrade, performance suspension bushes, front axle bushings, handling upgrade kit, Road Series polyurethane.