Powerflex Black Series 95A Front Lower Control Arm/Wishbone Rear Bushes/Bushings (Pair) – BMW Z4 G29 2018+ & Toyota GR Supra A90/J29 2019+ – Radius Rod/Caster/Thrust Arm/Tension Strut to Chassis Polyurethane Bushes – PFF5-

PFF5-5401BLK Poly Bush Upgrade for Z4 G29 and GR Supra A90 J29

Unlock sharper front axle response, greater braking stability and crisp on-centre feel with this motorsport-grade bush kit. Part number PFF5-5401BLK replaces the soft factory rubber at the rear of the front lower arm, giving you the precision that fast road and track drivers demand.

What it is

A pair of high-stiffness 95 Shore A polyurethane front lower arm rear bushes with anodised aluminium outer shells. Designed to control fore-aft movement of the front wheel and stabilise caster under load, these mounts reduce compliance for consistent geometry during hard braking and turn-in.

Why enthusiasts choose this kit

• Up to 300 percent stiffer than the original rubber inserts for immediate steering response and confidence under heavy braking.
• 95A polyurethane resists heat, oil and abrasion for long-term durability in track day, sprint and race environments.
• Anodised aluminium shells add rigidity to keep alignment steady during cornering, trail braking and kerb strikes.
• Direct-fit replacement for the front lower control arm rear position, no permanent modifications required.
• Enhances turn-in, mid-corner stability and tyre contact patch consistency for more repeatable lap times.

Real-world results

We have installed these bushes on customer BMW Z4 G29 and Toyota GR Supra A90 builds at MJ Modifications, and feedback has been excellent. Drivers report a more planted front end, cleaner braking feel into hairpins and notably improved precision during fast direction changes.

Fitment

• BMW Z4 G29 2018 onwards
• Toyota GR Supra A90 J29 2019 onwards

Location descriptions often used for this part: front lower arm rear bush, front wishbone rear mount, thrust arm inner bush, tension strut to body bushing, front caster bush, radius rod to chassis mount.

OE cross references

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

What you receive

Supplied as a pair of bushes to complete one car. Hardware as shown by the manufacturer.

Key benefits at a glance

• Reduces front arm compliance for razor-sharp turn-in.
• Improves braking stability and reduces dive for a calmer steering wheel on the limit.
• Keeps caster and toe more consistent for confident high-speed direction changes.
• Motorsport-focused material with excellent resistance to degradation.

Part number

PFF5-5401BLK

Installation and support

Prefer professional fitting We can install and align these at MJ Modifications, Warwickshire. Request a quote: info@mjmodifications.co.uk.

Need us to check compatibility Add your UK registration or last 7 of the VIN at checkout and our team will confirm fitment before dispatch.

Manufacturer

Produced by Powerflex in their performance-focused Black Series specification for track, race and rally use.

Images

Fitting guide

Download the official installation instructions

Search-friendly terms

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