Powerflex PFF5-1901G Caster Adjustable Front Radius Arm To Chassis Bushes for BMW 4 Series F32 F33 F36
Upgrade the front suspension on your BMW 4 Series F32, F33, F36 with Powerflex PFF5-1901G polyurethane bushes. These caster adjustable front radius arm to chassis bushes are a proven suspension upgrade that sharpens steering feel, improves stability and maximises tyre contact for better grip and confidence on the road.
Why choose Powerflex PFF5-1901G for your BMW 4 Series
- Part number: PFF5-1901G
- Fitment: BMW 4 Series F32 Coupe, F33 Convertible, F36 Gran Coupe
- Diagram reference: 1
- Quantity in pack: 2 bushes
- Road Series formulation: approximately 60% stiffer than the original rubber bush to resist deflection under load
- On-car caster adjustment: provides ±0.75 caster offset for precise geometry tuning and improved steering feel
- More camber on turn: added caster generates extra negative camber as you corner for stronger front-end grip and better tyre contact under hard driving
- Enhanced stability: reduces braking instability, wandering and imprecise handling caused by soft or ageing OEM rubber bushes
- Improves tyre wear: helps reduce uneven tyre wear and promotes prolonged tyre life
- Lifetime Warranty: Powerflex Lifetime Warranty for peace of mind
We have fitted and driven on these Powerflex bushes ourselves, and our customers consistently report sharper turn-in, more consistent steering feedback and a more planted front end on both daily and fast-road setups. If you want a non-adjustable option that retains OEM geometry, choose PFF5-1901.
Common search terms and compatibility
Powerflex poly bushes BMW 4 Series, BMW F32 F33 F36 front bush, caster adjustable bush kit, front radius arm to chassis bush, front lower control arm rear bush, front wishbone rear bush, tension strut bush, control arm bush, suspension upgrade BMW 4 Series, polyurethane bushes BMW, PFF5-1901G Powerflex.
What this upgrade solves
Imprecise handling, uneven tyre wear and braking instability are classic symptoms of soft or failed OEM rubber bushes. Powerflex polyurethane controls unwanted suspension movement so your geometry stays consistent, your tyres stay in contact with the road and your BMW handles the way it should.
OEM cross reference
OE reference: 3112685574331126855741 / 31126855742
Professional fitting available
We recommend professional installation for correct caster setup and alignment. Nforcd offers expert fitting in Warwickshire. Request a fitting quote at Sales@nforcd.com.