Powerflex Black Series Polyurethane Front Radius/Thrust (Tension Strut) Arm to Chassis Bushes - Caster Offset 6mm - PFF5-6201G - BMW F10 5 Series & M5

Front lower control arm rear bush kit with fixed caster increase for BMW F10 5 Series and F10 M5

Transform steering feel and front-end stability on your BMW F10 with this motorsport-grade bush set. Part number PFF5-6201G delivers a fixed 6 mm positive caster shift at the rear mounting point of the front lower arm, tightening up geometry for crisper turn in, better straight-line tracking and more confidence on fast road and track days.

Manufactured in the Powerflex Black Series compound, these bushes are approximately 18 percent stiffer than the factory rubber inserts. That extra rigidity controls unwanted arm movement under braking and cornering, keeps alignment where it should be and helps the tyres maintain a consistent contact patch. Expect improved steering precision, calmer behaviour over bumps and more predictable feedback through the wheel.

• Part number: PFF5-6201G
• Vehicle: BMW F10 5 Series including F10 M5
• Location: front lower arm rear mount to body, also known as wishbone rear bush or tension strut rear bush
• Offset: fixed 6 mm caster increase for enhanced self-centring and stability
• Material: Powerflex Black Series polyurethane, circa 18 percent stiffer than OE rubber
• Quantity: 2 bushes per kit
• Diagram reference: 1
• OE cross references: 31122284976 and 31122284975
• Non adjustable alternative available: PFF5-6201
• Lifetime Warranty

What you will feel

• Sharper initial turn in and more direct steering response
• Stronger braking stability with reduced wander on uneven surfaces
• Increased cornering confidence thanks to improved camber gain on lock
• More consistent wheel alignment that helps protect tyre wear
• Durable performance for fast road and track use with controlled NVH

Why this upgrade works

The factory rubber insert at the rear of the front arm is a high load point that softens with age and mileage. Replacing it with a stiffer polyurethane component reduces compliance, prevents geometry shift under load and supports a mild caster increase for clearer on-centre feel. The result is a more precise front axle without harshness, perfect for spirited driving and track sessions.

Fitment and notes

Designed specifically for the BMW F10 chassis including the F10 M5. This kit replaces the rear bushing of the front control arm, commonly referred to as the wishbone rear mount, front arm rear bush or tension strut rear mount on BMW platforms.

Installation and alignment

Professional fitting and a four wheel alignment are recommended to maximise geometry benefits. For expert installation in Warwickshire, contact MJ Modifications for a quote at info@mjmodifications.co.uk.

Tested by us

We have installed this kit on our own cars and customer vehicles. Feedback has been consistently positive, with noticeable improvements in steering accuracy, high speed stability and overall chassis confidence.

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