Powerflex Black Series PFF5-4001 Front Tension Strut/Thrust/Radius/Caster Arm to Body Polyurethane Suspension Bush/Bushing Kit for BMW M4 (F82/F83) 4 Series - Front Lower Control Arm/Wishbone Front Mount - Pair

Part Number: PFF5-4001

Unlock razor-sharp front-end control on your BMW M4 with this uprated tension strut to body bushing set. Designed for the F82 and F83 chassis, this polyurethane upgrade replaces the soft factory inserts on the front lower arm (often called the thrust arm, tension strut or caster arm) to deliver cleaner turn-in, tighter geometry control and rock-solid stability under hard braking.

Built in the high-performance Black Series compound, these bushes increase stiffness by approximately 18 percent versus the original rubber, cutting unwanted movement at a critical mounting point. The result is precise alignment retention during acceleration, cornering and braking, helping the tyre maintain a consistent contact patch for confidence on fast road and track days. Despite the added rigidity, the carefully engineered polyurethane keeps noise and harshness in check for daily usability.

We’ve used this exact kit on our own cars and customer builds with outstanding feedback: crisper steering feel, reduced squirm under load and a more connected, predictable front end.

Key benefits

• Direct replacement bushing kit for the front lower arm front mount on BMW M4 F82 and F83
• Stiffer Black Series polyurethane for superior alignment stability and steering precision
• Helps reduce braking shimmy, tramlining and uneven tyre wear caused by tired OE rubber
• Improves feedback and confidence for spirited driving, fast road and track use
• Durable construction with a manufacturer Lifetime Warranty

Vehicle compatibility: BMW 4 Series M4 F82 coupe and F83 convertible — front tension strut/thrust arm to body position.

Contents: Pair of bushes (2 pieces)

Diagram reference: 1

Looking for additional caster? Choose the caster-offset version: PFF5-4001G.

OE cross references: 31122284531 / 3112228453231122283579

Professional fitting

Want it fitted by experts? Book installation with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

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