Turner Motorsport Front Tension Strut Monoball (Spherical Bearing) – BMW F87 M2 F80 M3 F82/F83 M4 F8x Caster/Thrust Arm Control Arm Hydraulic Bush Delete Ball Joint Kit – Steering, Brake Shimmy & Alignment Stability Upgrade

Transform the front end of your BMW with a precision tension strut spherical bearing conversion. This front lower control arm rear bushing replacement eliminates the soft, fluid-filled rubber bush that allows the wheels to move fore and aft, bringing back the crisp response you expect from an M car. If you are tired of vague steering, brake shimmy and uneven tyre wear, this upgrade delivers immediate confidence on fast road and track without sacrificing day-to-day comfort.

Built around a sealed, greased OEM BMW ball joint, the assembly is engineered for durability and low friction with zero bind. The outer body is CNC machined from 6061-T6 anodised aluminium for corrosion resistance, using a knurled outer surface to ensure a secure press fit. Precision 304 stainless inserts complete the package for a tight, repeatable interface with the arm. The result is direct feedback, stable geometry under load and a more connected drive.

Fitment includes BMW F87 M2, F80 M3 and F82/F83 M4 models. This is a direct press-in solution for the front caster arm position, requiring no modification to the chassis and retaining factory comfort thanks to the sealed ball joint design.

• Replaces the stock hydraulic rubber bush in the front tension strut with a sealed ball joint for superior control
• Nearly instantaneous turn-in and braking response with consistent steering feel
• Maintenance free and long lasting, even in harsh conditions
• 6061-T6 anodised housing resists corrosion and provides strength without added weight
• Proprietary knurled outer profile ensures the correct press fit in a wide range of arm bore tolerances
• CNC machined 304 stainless inserts for precise location and smooth articulation
• Improved road feel without unwanted noise, vibration or harshness

Why enthusiasts choose this front suspension upgrade:

• Eliminates deflection that causes delayed steering and braking inputs
• Reduces wheel shake and helps prevent uneven tyre wear
• Keeps alignment stable under heavy cornering and hard stops
• Ideal for fast road, track days and performance builds while remaining totally street friendly

We run these on customer cars and in our own builds. Feedback has been overwhelmingly positive, with sharper steering, better stability under braking and a more connected front end feel from the first drive.

Installation and setup:

• Direct replacement for the factory thrust arm bush position
• Press-in fitment to the original arm
• No additional lubrication or servicing required

Professional fitting available at MJ Modifications in Warwickshire. For a quote or to book, email info@mjmodifications.co.uk.

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