Powerflex Poly Bushes Pack Front Radius Arm To Chassis Bushes - E82 1 Series M Coupe (2010-2012) - PFF5-401G

BMW E82 1M Front Radius Rod to Body Polyurethane Bush Kit — Caster Adjustable — Powerflex PFF5-401G

Unlock sharper steering, stronger braking confidence and rock-solid front end control on your BMW 1 Series M Coupe (2010–2012) with Powerflex PFF5-401G. This caster-adjustable polyurethane bushing kit replaces the soft factory mounts at the rear of the front lower control arm, transforming road feel and precision for fast road and circuit use.

Why upgrade to PFF5-401G?

• On-car caster tuning: +/- 0.75 degrees via an eccentric, CNC-machined stainless sleeve for dialled-in alignment and front-end bite.
• Crisper turn-in and improved camber gain mid-corner for confident, predictable handling.
• Greater stability under high-speed braking with reduced fore-aft arm movement.
• Built to take abuse: Black 95A polyurethane with steel outer shells for superior load distribution and durability.
• Stiffer by design: around 25% firmer than the previous iteration and roughly 140% stiffer than tired rubber bushes.

What you get

• Quantity: 2 bushes (pair) for the rear position of the front lower arm.
• Adjustable eccentric sleeve and spanner included for easy setup.
• Road Series performance for daily use, spirited driving and track days.

Tech details and references

• Part number: PFF5-401G
• Position: Front tension strut/rear wishbone bush to body
• Material: Black 95A polyurethane with steel outer shells, CNC stainless sleeve
• Diagram reference: 1
• Replaces OE references: 31120393540, 31126763719, 31102283579

Real-world results

We have fitted this kit on multiple customer E82 1M builds and the feedback is consistent: tighter steering response, better lane stability and more confidence under hard braking. We use it ourselves and rate it highly for both spirited B-road drives and track day reliability.

Fitting and setup

Professional installation and a quality wheel alignment are strongly recommended to get the best from the caster adjustment. Book fitting with MJ Modifications in Warwickshire — request a quote at info@mjmodifications.co.uk.

Also searched as

BMW 1M front lower control arm rear bush, front radius arm to body bush, caster correction bushes, front wishbone rear mount, tension strut bushing, compression rod bush, polyurethane suspension bushes, BMW E82 1M handling upgrade, track day suspension, fast road bush kit, Powerflex PFF5-401G bushings, alignment correction kit, front axle geometry upgrade, lollipop bush replacement.