Front Radius Arm To Subframe Bushings - F85/F86 X5M/X6M

Product Details

Dynamic alignment drift is the enemy of track times and high-speed stability, especially in a 5,000-pound vehicle packing 560+ horsepower. Under threshold braking and hard apex clipping, the factory rubber radius arm (tension strut) bushings flex heavily. This unwanted arm deflection alters your dynamic toe and caster exactly when you need a predictable footprint. The Powerflex PFF5-3401 Bushing Set is a track-engineered upgrade designed to secure the front tracking geometry of your F85 X5 M or F86 X6 M.

To combat the incredible mass and torque of these platforms, this bushing utilizes Powerflex’s hardest 95A durometer Black Series compound. It is reinforced by an in-house CNC-machined aluminum outer shell and high-tolerance stainless steel inner pins to optimize load distribution across the subframe bracket. Delivering a 25% increase in torsional stiffness over stock rubber, this kit limits uncommanded wheel movement, ensuring direct power translation to the tarmac and stable dynamic caster under high-G loads.

Technical Features:

• 25% Stiffer Than OE: Rigid 95A durometer polyurethane stops suspension arm migration under load.

• Hybrid Metal/Urethane Engineering: Features CNC-machined outer shells to maximize surface area contact and prevent structural binding.

• Knurled Inner Bore: Precision internal greasing tracks retain lubricant to ensure squeak-free, low-resistance operation.

• Direct Press-In Overhaul: Engineered to flawlessly replace BMW inner bushing part #31107850276 within the stock aluminum control arms.

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