Powerflex Poly Bushes Pack - Front Radius Arm To Chassis Bush Caster Offset - PFF5-4001G - BMW F82 F83 4 Series M4
Get sharper steering, improved turn-in and more confident handling with the Powerflex front radius arm to chassis caster offset bush kit for BMW M4. This Powerflex Black Series polyurethane bush upgrade is engineered for performance, precision and durability on the F82 and F83 BMW M4. Ideal for fast road and track, these caster offset polybushes reduce unwanted suspension deflection and keep geometry stable under load, giving you consistent grip and control.
Part number: PFF5-4001G
Fitment: BMW M4 F82 Coupe, F83 Convertible - Front radius arm to chassis bush - caster offset
Why choose these Powerflex poly bushes for your BMW M4?
- Fixed 5 mm offset provides approximately ±0.5 degrees caster for improved steering feel and stability
- Creates additional negative camber on turn for better tyre contact during heavy cornering
- Black Series material increases stiffness by 18 percent over the original rubber bush to withstand higher loads
- Reduces flex and maintains consistent alignment for predictable braking and cornering
- Prolonged tyre life, improved performance and increased safety
- Lifetime Warranty for peace of mind
We run these on our own builds and have fitted them to customer cars with excellent feedback. If you are chasing precision, feedback and stability from your front end, these Powerflex polyurethane bushes are a proven upgrade over soft, ageing OEM rubber.
Common search terms
Powerflex poly bushes BMW M4, PFF5-4001G, front radius arm bush, front control arm bush, caster offset bush, wishbone bush, suspension bushes, polyurethane bushes, polybush kit, Black Series bushes, BMW F82 M4 bushes, BMW F83 M4 bushes, handling upgrade, track day suspension, fast road suspension, steering feel, negative camber on turn, performance suspension upgrade, lifetime warranty bushings.
What’s included
- Diagram reference: 1
- Number of bushes in the pack: 2
Replaces OEM part numbers
31122284531, 31122284532, 31122283579
Notes
- PFF5-4001G is the caster offset version for enhanced steering feel and geometry on turn
- For a non-adjustable version use PFF5-4001
- Wheel alignment is recommended after installation
Fitting service
Professional fitting available at Nforcd in Warwickshire. Request a fitting quote: Sales@nforcd.com
Why polyurethane bushes
Powerflex bushes control unwanted suspension movement far better than soft rubber, keeping your tyres in contact with the road for maximum grip, stability and braking confidence. Correctly formulated polyurethane also manages noise, vibration and harshness effectively, making it a smart, long-lasting performance upgrade.