Powerflex Black Series PFF5-1901BLK Front Radius Arm/Tension Strut to Chassis Polyurethane Bushes for BMW F20 F21 F22 F23 F30 F31 F32 F33 F36 (1 2 3 4 Series)

Powerflex Black Series PFF5-1901BLK Caster/Thrust Arm Rear Bushes for BMW F-Series

Unlock pinpoint front-end precision on your BMW F-Series with these motorsport-grade polyurethane rear bushes for the front lower arm. Powerflex Black Series PFF5-1901BLK replaces the soft rubber compliance mount on the front axle tension link, delivering laser-accurate geometry control, crisper turn-in and confidence under heavy braking. Ideal for fast road and track day use, this is the go-to uprated polybush set for drivers who want tighter chassis control without the vagueness of tired OE rubber.

Part number: PFF5-1901BLK

Key advantages

• Motorsport-spec 95 Shore A polyurethane for reduced deflection vs standard rubber
• Stronger caster stability for consistent alignment and predictable handling
• Cleaner steering feel and front-end bite during turn-in and mid-corner load
• Improved pedal feedback and stability when braking hard
• Durable material resists oil, salt and road grime for long service life

We have fitted these on customer cars and our own F-series builds. Feedback is overwhelmingly positive, with owners praising the sharper steering feel, improved stability and confidence on both B-roads and circuits.

Also known as

Front lower control arm rear bush, wishbone rear bush, thrust arm bushing, caster arm rear mount, front tension strut mount, front axle compliance bush, front trailing arm bush.

Direct replacement for

• BMW OE cross-references: 31126855743, 31126855741, 31126855742

What you receive

• 2 x Powerflex Black Series bushes

Quantity required per vehicle: 2.

Vehicle fitment

Suitable for BMW F-Series platforms on the front axle rear bush of the lower arm/tension link:

• BMW 1 Series: F20, F21 (2011 to 2019)
• BMW 2 Series: F22, F23 (2013 onward)
• BMW 3 Series: F30, F31 (2011 to 2019)
• BMW 4 Series: F32, F33, F36 (2013 onward)

Compatibility check

To confirm fitment before dispatch, provide your UK registration or last 7 of the VIN at checkout and we will verify suitability for your exact model.

Technical note

Black Series is a competition-orientated compound and may increase NVH compared with standard rubber mounts.

Diagram reference

Reference No. 1.

Installation

Professional fitting is recommended, followed by an alignment. Download the installation guidance here: Powerflex fitting document.

Professional fitting by MJ Modifications

Want these installed by specialists? Book with MJ Modifications in Warwickshire. Request a fitting quote: info@mjmodifications.co.uk.

Manufacturer

Powerflex

Search-friendly highlights

• PFF5-1901BLK polybush kit for BMW F20 F21 F22 F23 F30 F31 F32 F33 F36
• Front lower control arm rear mount upgrade for 1 Series, 2 Series, 3 Series, 4 Series
• Caster/thrust arm rear bushing replacement, front tension strut mount, wishbone rear bush
• Uprated polyurethane bushes for fast road and track day handling improvements
• OE replacement for 31126855743, 31126855741, 31126855742
• BMW F-Series suspension bush upgrade, chassis bushings, compliance bush solution

Add to basket today for a precise, durable and proven handling upgrade on your BMW F-Series.