Powerflex PFF5-4001 Black Series Front Thrust/Radius Arm to Chassis Bush Kit (Set of 2) - BMW E82 1M, E90/E92/E93 M3, F87 M2, F80 M3, F82/F83 M4 - Tension Strut / Reaction Rod / Lower Control Arm/Wishbone Rear Polyurethane Caster Bushings

Powerflex PFF5-4001 Black Series Polyurethane Bush Kit for BMW M Chassis

Maximise front-end grip and steering precision on your BMW M car with the Powerflex Black Series PFF5-4001. This pair of high-performance polyurethane bushings replaces the factory rubber at the rear mount of the front arm, cutting unwanted movement for crisper turn-in, improved braking stability and consistent geometry on fast road and track. We run these on our own builds and customer cars and the feedback is always the same – sharper, more confidence-inspiring front axle behaviour.

Built from motorsport-grade material that is 18 percent firmer than the original rubber, the PFF5-4001 is engineered to handle the high loads seen at the thrust arm position. The result is reduced deflection under cornering and braking, more accurate caster control and a front end that stays planted when you really lean on it.

Why enthusiasts choose PFF5-4001

• 18 percent stiffer than OE rubber for focused handling and control
• Replaces the rear mount of the front arm for better caster stability and steering feel
• Direct-fit upgrade that resists oil, heat and road contaminants
• Proven on fast road, club motorsport and track day cars
• Supplied as a matched pair for one vehicle

Fitment

Designed for the following BMW M applications:

• BMW E82 1M Coupe
• BMW E90 M3 Saloon, E92 M3 Coupe, E93 M3 Convertible
• BMW F87 M2
• BMW F80 M3
• BMW F82 M4 Coupe, F83 M4 Convertible

Also known as thrust arm bush, caster arm bushing, guide rod rear mount, wishbone rear bush, front arm rear bushing, front control arm rear silentblock.

What you receive

• 2 x polyurethane bush assemblies
• Sufficient for one car

Part numbers

Powerflex Part Number: PFF5-4001

OEM cross-references: 31122284531, 31122284532, 31122283579

Real-world benefits

• Cleaner turn-in and front-end bite when attacking B-roads or circuits
• More stable braking with less shimmy through the wheel
• Holds alignment better to help reduce uneven tyre wear
• Consistent handling lap after lap compared with ageing factory rubber

Fitting and alignment

Professional installation is recommended. A four-wheel alignment after fitting will optimise tyre contact and geometry.

Want us to install it for you? MJ Modifications offers expert fitting at our Warwickshire workshop. Email info@mjmodifications.co.uk for a quote and availability.

Compatibility check before dispatch

We can validate compatibility prior to shipping. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm PFF5-4001 and the listed OE numbers suit your car.

Manufactured by

Powerflex Black Series

Search-friendly terms

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