Millway Motorsport BMW F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 xDrive Only Front Control Arm Tension Strut & Thrust Arm Bushings - Street Sealed Uniball (1/2/3/4 Series: M140iX, M235iX, 330iX, 340iX, 440iX)

Street Sealed Spherical Front Arm Bush Kit for BMW F2x F3x AWD

Transform the front end of your F-chassis xDrive with this Millway Motorsport sealed spherical bearing bush kit for the front lower arms. Designed for BMW F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 all-wheel drive models, this upgrade replaces the soft factory wishbone and caster arm bushes with motorsport-grade, sealed uniball assemblies. Expect sharper turn in, rock-solid geometry under braking, crisper feedback through the wheel and a more precise front axle feel on fast road, track day and time attack builds while remaining suitable for daily driving.

Ideal search terms: BMW F30 AWD front wishbone bush upgrade, F20 xDrive caster arm bushes, F32 4 Series all-wheel drive lower control arm bearings, M140i xDrive front arm bush kit, spherical bearing bush replacement, front suspension bushings F3x AWD, FCAB LCAB upgrade, front guide link bush, thrust arm bush kit, poly bush alternative, sealed uniball bushings for BMW F-chassis AWD.

Priced per pair

Why this upgrade works

• Direct-fit replacement for the front lower arm bushes on AWD F2x and F3x platforms
• Sealed spherical bearings minimise compliance for consistent camber and caster retention under load
• CNC machined aluminium housings with stainless spacers and hardware for durability
• Noticeably improved steering accuracy, stability under heavy braking and mid-corner confidence
• Perfect for fast road, track day and club motorsport where alignment stability matters
• Bolt-on solution without the hassle of full arm swaps

Proven on our builds

We run these sealed spherical bushes on our own F-series AWD projects and customer cars. Feedback has been excellent, with owners reporting reduced front-end squirm, better pedal confidence on hard stops and a more connected steering feel compared to tired OE rubber or basic polyurethane options.

Vehicle coverage

Fits xDrive models only

• BMW 1 Series F20 F21 2010 to 2018
  • 118d xDrive, 120d xDrive, M135i xDrive, M140i xDrive
• BMW 2 Series F22 F23 2012 to 2018
  • 220d xDrive, 228i xDrive, M235i xDrive, M240i xDrive
• BMW 3 Series F30 F31 F34 2010 to 2018
  • 318d xDrive, 320d xDrive, 328d xDrive, 328i xDrive, 330d xDrive, 330i xDrive, 335d xDrive, 335i xDrive, 340i xDrive
• BMW 4 Series F32 F33 F36 2012 to 2018
  • 420d xDrive, 420i xDrive, 428d xDrive, 428i xDrive, 430d xDrive, 435d xDrive, 435i xDrive, 440i xDrive

Looking for rear-wheel drive options instead of AWD xDrive. See our separate 2WD listing.

What is included

• Pair of Millway sealed spherical bearing bush assemblies for the front lower arms
  • Replaces the standard wishbone and caster arm bushes
• Stainless steel spacers and required hardware

Installation and alignment

Professional fitting and a high-quality four-wheel alignment are recommended to maximise tyre life and performance. MJ Modifications offers expert installation in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Compatibility check

We verify fitment before dispatch. Please provide your UK registration or the last 7 digits of your VIN at checkout to ensure you receive the correct AWD parts for your chassis.

Lead time

Typical lead time is 2 to 3 weeks if not in stock.

Part number

xDrive part number will be confirmed during the compatibility check. Note that MW90496-F30-X refers to an older 2WD listing and does not apply to xDrive models.

Manufactured by

Millway Motorsport

Search help

Also searched as: front lower arm bush kit, wishbone bush replacement, caster rod bushes, guide link bush, thrust arm bearings, front control arm bushes AWD, spherical bush conversion, BMW F-series AWD suspension upgrade, M140i xDrive handling upgrades, F30 340i xDrive steering feel improvement, F32 440i xDrive front axle refresh.