Powerflex Black Series PFF5-6101GBLK Front Tension Strut/Thrust Arm/Radius Arm Bush +

BMW F10 F11 F06 F12 F13 xDrive Front Tension Strut Bushes with Caster Correction – Powerflex Black Series PFF5-6101GBLK

Transform steering feel and front-end grip on your all-wheel-drive 5 Series and 6 Series with these competition-grade front tension strut to chassis bushes. Powerflex Black Series PFF5-6101GBLK uses a super-stiff 95 Shore compound and a fixed 6 mm offset to dial in extra caster for sharper turn-in, better stability under hard braking and more confident fast-road and track-day performance. A direct swap for the factory rubber mount (replaces OE 31126777653), this poly bush kit tightens up the front lower arm assembly for precise geometry control and repeatable handling.

• 6 mm caster correction adds roughly ±0.5° caster for improved straight-line stability and steering self-centring
• More negative camber on lock for increased tyre contact patch and front-end bite through corners
• 95 Shore polyurethane minimises deflection for consistent alignment under load
• Motorsport-focused feel for circuit, sprint and fast road without the short life of soft rubber
• Direct replacement for the BMW thrust arm bush to cure vague steering and reduce shimmy

We run these bushes on our own builds and customer cars, and the feedback is exactly what keen drivers want to hear: crisper initial response, calmer braking, and a planted front axle on bumpy B-roads and during hard laps. If you are hunting for a front lower arm bushing upgrade for BMW F10 F11 or BMW F06 F12 F13 xDrive models, this is the proven geometry correction solution.

Fitment and compatibility

• BMW 5 Series F10 F11 xDrive (2010–2016)
• BMW 6 Series F06 Gran Coupe, F12 Convertible, F13 Coupe xDrive (2011–2018)

Also known as: thrust arm bush, tension strut bushing, front lower control arm mount, front wishbone bush, caster bush, geometry correction bush for AWD models.

Technical detail

• Part number: PFF5-6101GBLK
• Material hardness: 95 Shore polyurethane
• Offset: fixed 6 mm caster increase
• Replaces BMW OE: 31126777653
• Direct-fit pair for the front tension struts on xDrive vehicles

If you require a straight-bore, non-offset option, see PFF5-6101.

What’s in the box

• 2 x bushes (one per side – you need 2 per car)

Why upgrade this location

The factory rubber mount can compress and age, allowing unwanted movement in the front lower arm. Upgrading to a stiff polyurethane bushing reduces compliance, keeps alignment true under heavy braking and cornering, and sharpens steering feedback. Ideal for enthusiasts seeking a suspension upgrade for BMW F10 F11 and BMW F06 F12 F13 xDrive without the maintenance demands of spherical bearings.

Installation

Download the fitting instructions

Professional installation and alignment recommended. For expert fitting, contact MJ Modifications in Warwickshire for a quote: info@mjmodifications.co.uk.

Compatibility check before dispatch

We verify fitment prior to shipping. At checkout, add your registration number for UK vehicles or the last 7 digits of your VIN for international orders.

Manufactured by

Powerflex

Helpful search terms

BMW F10 F11 xDrive front control arm bushes, BMW 6 Series F06 F12 F13 AWD tension strut bush kit, caster correction bushings, front thrust arm mount upgrade, polyurethane front arm bush, handling upgrade BMW 5 Series, steering response improvement, performance suspension bushes, poly bush kit PFF5-6101GBLK, replaces 31126777653.

Diagram

Reference position: 1