Powerflex PFF5-1901 Poly Bush Kit Front Lower Arm to Body/Chassis/Subframe (Wishbone/Caster/Thrust/Compression/Radius/Tension Arm) - BMW 1 Series F20 F21 - Pair - Road Series Polybush Handling Upgrade - PFF5-1901G Caster Offset Option

Powerflex PFF5-1901 Front Lower Arm To Body Poly Bush Kit for BMW 1 Series F20 F21

Transform the way your 1 Series drives with the Powerflex PFF5-1901 polyurethane bushes. This pair of uprated arm-to-chassis mounts replaces tired factory rubber on the front suspension reaction rod, bringing tighter steering, improved straight-line stability and consistent geometry control under braking and cornering. We run these on our own cars and our customers love the sharper turn in, reduced shimmy and long-lasting performance.

Why upgrade to these bushes

• 60 percent stiffer than standard rubber for precise alignment control under load
• Cleaner steering feel with better on-centre confidence and reduced tramlining
• Helps maintain a larger contact patch for improved grip and tyre life
• Polyurethane compound resists oil, road grime and ageing for long-term durability
• Road Series compound balances performance with comfort and low NVH
• Backed by Powerflex Lifetime Warranty

Ideal for drivers who want

• Crisper front-end response on daily road use and fast road driving
• Reduced braking instability and fewer vibrations from worn OE bushes
• A fit-and-forget solution that outlasts conventional rubber

Product details

• Part number: PFF5-1901
• Vehicle: BMW 1 Series F20 and F21
• Location: Front lower arm to body mount, also known as caster arm, compression strut or thrust arm bush
• Pack size: Pair
• Series: Road Series
• Diagram reference: 1
• Caster offset option available: PFF5-1901G

Symptoms these bushes help address

• Vague steering or wandering at motorway speeds
• Brake shimmy and instability
• Uneven front tyre wear
• Knocks or clunks from worn wishbone bushes

OEM cross references

Common OE numbers for the arm-to-body bush location: 31126855743, 31126855741, 31126855742.

Professional installation

Want it fitted right first time. Book expert fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search terms to help you find this upgrade

BMW F20 front lower wishbone bush, BMW F21 caster arm bushing kit, 1 Series compression strut bush upgrade, front arm to subframe mounts, front arm to body bush pair, BMW F20 handling upgrade bushes, polyurethane wishbone rear bush, BMW 1 Series steering shimmy fix, uprated suspension bushes BMW F20 F21, polybush kit front arm BMW 1 Series, PFF5-1901 bush kit, Powerflex Road Series bushes BMW 1 Series.

Choose Powerflex PFF5-1901 for a proven front-end upgrade that tightens response, boosts stability and keeps your BMW driving at its best, mile after mile.