Powerflex Front Wishbone/Lower Control Arm Rear Bushes (Caster Increase, Offset) - BMW 1/2 Series F40 F44 F45 F46, X1 F48 F49, X2 F39 & MINI F54 F55 F56 F57 F60 - Polyurethane LCA Rear Mount Kit PFF5-1302G

Poly Bush Front Lower Arm Rear Mount with Caster Increase for BMW F-Series and MINI F5x

Transform front-end response and chassis precision with this uprated polyurethane rear position bushing for the front lower wishbone. Part number PFF5-1302G is a direct replacement for tired rubber mounts on modern BMW 1 Series, 2 Series, X1, X2 and MINI F54, F55, F56, F57, F60 platforms, delivering a sharper steering feel, improved stability and a more consistent geometry under load for enthusiastic road and fast-road driving.

Engineered with an offset sleeve to add approximately 1 degree of caster, this geometry-correction bush increases in-corner camber gain for crisper turn-in without compromising straight-line traction. The clever free-rotating design uses a CNC-machined, knurled sleeve to retain grease and minimise torsional wind-up, so the arm pivots smoothly and repeatably. The result is reduced deflection, better tyre contact and a confident, planted front end on UK roads.

Key benefits

• Polyurethane rear position bushing for the front lower control arm
• Approx. 1 degree caster increase for improved camber gain and turn-in
• CNC-machined, knurled inner sleeve for superior grease retention and free rotation
• Maintains alignment under braking and cornering, reducing geometry creep
• Enhances steering precision, front-end bite and overall stability
• Durable, road-ready upgrade that outlasts standard rubber mounts
• Helps promote even tyre wear and consistent performance

We fit these on our own cars and customer builds and they deliver exactly what keen drivers want: tighter tracking, more confidence on turn-in and a more connected steering feel compared with ageing OEM rubber.

What you receive

• 2 x bushes (you will require 2 bushes per car)

Vehicle applications

BMW

• 1 Series: F40 (2018 on), F52 Sedan (2017 on)
• 2 Series: F44 Gran Coupe (2019 on), F45/F46 Active Tourer (2014 on)
• X Series: X1 F48/F49 (2016 on), X2 F39 (2017 on)

MINI

• F54 Clubman Gen 2 (2015 on)
• F55/F56 Gen 3 (2014 on)
• F57 Cabriolet (2014 on)
• F60 Countryman Gen 2 (2017 on)

Replaces OEM numbers

• 31126850403 / 31126850404 (02/12/2013 to 06/11/2014)
• 31126874341 / 31126874342 (01/09/2014 to 15/12/2017)

Part number

PFF5-1302G

Compatibility check before dispatch

Add your UK registration or the last 7 digits of your VIN at checkout and we will confirm fitment before shipping.

Professional installation

For fitting and alignment, book with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Manufactured by

Powerflex

Diagram

Reference No. 2

Installation guide

Download the fitting instructions

Search terms to help you find this upgrade

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