SPL Parts BMW F22 F23 F30 F31 F34 F32 F33 F36 xDrive Front Tension Strut / Thrust Arm / Caster Arm Monoball Bushings – Radius Rod Guide Rod FK Spherical Bearing Pair – Non-Adjustable Lower Control Arm Rear Bush Upgrade – 2/3/4 Series AWD (CRBN F3iX)

BMW F2X F3X xDrive front tension strut spherical bearing upgrade

Transform the front end of your AWD F Series with the SPL Parts fixed-geometry tension strut bearing kit. This motorsport-grade front lower arm rear position upgrade swaps the compliant factory rubber insert for a low-friction PTFE-lined spherical assembly that holds alignment under load, tightens up steering feel and adds confidence under heavy braking on fast road and track days.

If you are searching for BMW F Series xDrive radius arm bearings, front lower control arm rear bush replacement, compression arm bearing kit, tension strut monoball conversion, thrust arm bearing replacement, or spherical control arm insert for 2 Series, 3 Series and 4 Series AWD, this SPL Parts solution is the go-to choice for precision, durability and feedback.

Why enthusiasts choose this upgrade

• Holds geometry when you lean on the brakes - dramatically reduces bush movement to keep caster and toe stable
• Sharper turn in and cleaner feedback - minimal friction thanks to PTFE-lined race-spec internals
• Built to last - huge 1 inch FK bearings with self-lubricating liners for smooth articulation
• Billet strength - CNC-machined 6061-T6 aluminium housings with a secure press-fit knurled outer surface
• Track proven - engineered by SPL Parts and made in the USA
• Sold as a pair - left and right side included

What you get

• Two SPL Parts front lower arm rear position bearing housings
• Two FK 1 inch PTFE-lined spherical bearings pre-installed
• Everything designed for a direct replacement of the OE rubber insert on AWD cars

Vehicle fitment

For xDrive AWD models only:

• BMW F2X 2 Series xDrive
• BMW F3X 3 Series xDrive
• BMW F3X 4 Series xDrive

Note: fits xDrive AWD vehicles only

Real-world results

We run this part on our own cars and our customers love the direct steering and stability under braking. Expect a front end that feels planted, precise and confidence inspiring with consistent handling lap after lap.

Ideal use cases

• Fast road driving where crisp response matters
• Track days and performance builds wanting predictable alignment control
• Replacing worn OE rubber inserts on F Series xDrive front lower arms

Fitting and alignment

Professional installation recommended. A four-wheel alignment is advisable after any suspension work. For expert fitting, book with MJ Modifications in Warwickshire or request a quote via info@mjmodifications.co.uk.

Part number

CRBN F3iX

Brand

SPL Parts

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