Powerflex PFF5-5401 95A Front Radius/Caster/Thrust Arm to Chassis Bush Pair – BMW Z4 G29 2018+ & Toyota GR Supra Mk5 A90/J29 2019+ – Tension/Compression Strut, Track Control Arm Rear, Wishbone/Lollipop Mount Polyurethane Bush Kit

PFF5-5401 Caster/Thrust Arm Bush Pair for BMW Z4 G29 and Toyota Supra Mk5 J29

Tighten your front axle and unlock crisp steering response with this uprated polyurethane caster arm bushing kit. Engineered in 95A material with anodised aluminium outer sleeves, PFF5-5401 delivers up to 300 percent more stiffness than tired factory rubber, keeping your geometry consistent under hard braking and cornering. The result is sharper turn-in, a more planted front end and confidence-inspiring stability on road and fast road setups for G29 Z4 and Mk5 Supra.

Why enthusiasts choose PFF5-5401

• High-durometer 95A polyurethane with anodised alloy shells for exceptional strength and longevity
• Significantly reduces fore and aft arm movement to maintain caster and alignment under load
• Improves steering precision, braking stability and mid-corner consistency
• Helps reduce uneven tyre wear by controlling compliance at the front arm mount
• Direct performance replacement for the OE bush on BMW Z4 G29 and Toyota Supra Mk5 J29

We have installed these bushes on our own projects and for many customers. Feedback is consistently positive, highlighting immediate gains in front-end bite, straight-line stability under braking and a more connected feel without the vagueness of ageing rubber components.

Compatibility

• BMW Z4 G29 2018 on
• Toyota Supra Mk5 A90 J29 2019 on

Direct OE cross-references

• BMW: 31106878587, 31106878588
• Toyota: 48640-WAA02, 48620-WAA02

Part number

PFF5-5401

What you receive

• 2 x bushes

Quantity required per car: 2. Supplied as a complete front axle set.

Fitting and installation

Professional installation recommended. MJ Modifications offers in-house fitting in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Installation guide: Download the PFF5-5401 fitting instructions

Compatibility check before dispatch

We will verify fitment before shipping. Provide your UK registration number or the last 7 digits of your VIN at checkout to ensure this front arm to chassis bushing kit is correct for your Z4 G29 or Supra Mk5.

Search-friendly terms

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Buy with confidence

Order from MJ Modifications for proven chassis upgrades and expert support. This high-quality polyurethane bushing kit is a straightforward, durable way to sharpen front-end response on your BMW Z4 G29 or Toyota Supra Mk5. Need help with fitment or installation timing? Get in touch and we will guide you.