Powerflex Black Series Front Control Arm/Tension Strut Polyurethane Bush Kit (Radius Arm to Chassis) for BMW Z4 G29 2018+ | Track/Motorsport Wishbone & Caster Bushings | PFF5-5401BLK

BMW Z4 G29 Front Control Arm Bush Upgrade – Powerflex Black Series – PFF5-5401BLK

Unlock sharper steering response and rock-solid stability with this front tension strut to body bushing kit for the BMW Z4 G29 (2018 onwards). Manufactured in the Powerflex Black Series polyurethane at 95 Shore A and paired with anodised aluminium outer shells, this track-focused upgrade is approximately 300% stiffer than the factory rubber components. It keeps the wheel located under heavy braking and hard cornering, delivering improved braking stability, enhanced handling and longer tyre life, with superb durability for repeated track day abuse.

Also referred to as front wishbone bushes, caster arm bushes, tension strut bushes or front lower control arm bushings, this performance suspension kit is a direct OE replacement designed to control chassis geometry and withstand motorsport use.

• Vehicle: BMW Z4 G29, 2018 onwards
• Location: Front tension strut to chassis (radius arm position)
• Compound: Black Series polyurethane, 95 Shore A
• Hardware: Anodised aluminium outer shells for maximum support
• Stiffness: Around 300% firmer than OE rubber for precise geometry control
• Pack contents: 2 bushes
• Use case: Track and motorsport focused performance upgrade
• Diagram reference: 1
• Part number: PFF5-5401BLK
• Replaces OE numbers: 31106878587, 31106878588, 48640-WAA02, 48620-WAA02

Why choose this upgrade

• Improved braking stability and reduced wheel movement under load
• Sharper turn-in and more consistent alignment during hard driving
• Longer tyre life thanks to better control of suspension geometry
• Highly durable setup built for repeated heat cycles and high loads

We run these bushes on our own builds and customer cars and the feedback has been fantastic, especially for track days where consistency and confidence matter most.

Professional fitting

Want it installed correctly first time? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

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