Powerflex
Powerflex Black Series Front Wishbone/Lower Control Arm Rear Mount Bush Polyurethane Polybush Kit - BMW 1 2 3 4 Series F20 F21 F22 F23 F30 F31 F32 F33 F36, X3 F25, X4 F26 - Inner Arm to Chassis Suspension Bushing PFF5-1902BLK
Powerflex Black Series Front Wishbone/Lower Control Arm Rear Mount Bush Polyurethane Polybush Kit - BMW 1 2 3 4 Series F20 F21 F22 F23 F30 F31 F32 F33 F36, X3 F25, X4 F26 - Inner Arm to Chassis Suspension Bushing PFF5-1902BLK
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Front Wishbone Rear Mount Poly Bush Upgrade for BMW F-Series and X Models | Powerflex Black Series | PFF5-1902BLK
Transform steering feel and chassis precision with this motorsport-grade polyurethane bush set for the front lower arm rear mounting point. Engineered in the Powerflex Black Series 95 Shore A compound, this kit dramatically limits unwanted movement at the inner wishbone pivot, giving crisper turn-in, rock-solid braking stability and geometry that stays true when driven hard on B-roads or at track days.
We run these on our own builds and our customers love the result. Expect tighter responses, more consistent tyre contact and a more connected drive compared to tired factory rubber components. Ideal for fast road use and dedicated circuit setups where maximum control of camber and toe under load really matters.
- Black Series polyurethane at 95A hardness for minimal deflection and maximum control
- Replaces the inner bush on the front lower arm to stabilise the wishbone-to-subframe mounting
- Sharper steering, improved mid-corner stability and repeatable alignment under braking and cornering
- Resistant to oil, road grime and extreme temperatures for long-term durability
- Direct replacement for OE rubber with no permanent modifications required
What You Get
- 2 x Powerflex Black Series bushes
- Diagram reference: 2
- Typically 2 required per vehicle
Replaces OE Numbers
- 31126852991
- 31126852992
Fitment
Front lower arm rear bushing position for the following BMW chassis codes:
- 1 Series F20 F21
- 2 Series F22 F23
- 3 Series F30 F31
- 4 Series F32 F33 F36
- X3 F25
- X4 F26
Perfect search matches include: BMW F-series front wishbone rear bush, inner lower arm bush, poly bush kit front axle, suspension bushing upgrade BMW F20 F30 F32, front arm rear mount insert, performance bushes BMW F-chassis, track day suspension upgrade, handling kit BMW F25 F26, Powerflex Black Series polybush set.
Why Upgrade
Perished OE rubber allows the arm to move, upsetting toe and camber mid-corner. This Black Series poly solution keeps the wheel located, delivering confidence and consistency lap after lap and on fast road drives. More feel, more stability and better use of your tyres.

Installation
Professional fitting recommended. A press and correct supports are typically required. A full four-wheel alignment is advised after installation to maximise tyre life and handling performance.
Professional Fitting by MJ Modifications
Want it fitted for you. MJ Modifications in Warwickshire offers expert installation and alignment services. Request a quote: info@mjmodifications.co.uk
Compatibility Check
We can verify suitability before dispatch. Add your UK registration or the last 7 of your VIN at checkout and our team will confirm fitment.
Part Number
PFF5-1902BLK
Brand
Powerflex Black Series
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