Powerflex Black Series Front Radius/Control Arm Bush Kit (Tension/Thrust/Caster) for BMW X4M F98 2019+ | Front Axle Suspension Upgrade | PFF5-2601 | Replaces OE 31108854990, 31108854989

Part number: PFF5-2601

Sharper steering and rock-solid stability for BMW X4 M F98 2019 onwards

Transform the front end of your BMW X4 M F98 with this high-performance front tension strut bush kit. Built from a tough Black 95A Shore compound and supplied with precision outer sleeves, this upgrade delivers up to 300 percent more stiffness compared with tired factory rubbers. The result is tighter geometry control, cleaner turn-in and a more planted feel when you hit the brakes or load the chassis through fast corners.

We have fitted these on customer X4M builds and the feedback is consistent: more confidence, crisper response and a noticeable improvement in stability on both road and track. If you want a proper handling upgrade that lasts, this is the one.

Why choose this front arm bushing upgrade

• Black 95A compound with outer sleeves for serious rigidity and long-term durability
• Up to 300 percent increase in stiffness to reduce fore-aft wheel movement under heavy braking and hard cornering
• Improves steering precision, braking stability and overall front-end feel
• Ideal for fast road and track use while maintaining everyday usability

Compatibility and fitment

• Vehicle fitment: BMW X4 M F98 2019 onwards
• Also known as: thrust arm bush, tension strut bush, caster arm bushing, front control arm bush
• Diagram reference: 1
• Quantity in pack: 2 bushes
• Replaces OE numbers: 31108854990 and 31108854989

Perfect for enthusiasts seeking

• Front axle stability and reduced deflection under load
• Caster consistency and geometry control
• A dependable suspension refresh for worn OEM bushings
• A motorsport-grade solution for the F98 X4M platform

Looking for professional installation in the UK We can help. Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search terms our customers use: BMW X4M F98 front control arm bushing, front thrust arm bush upgrade, tension strut bush kit, caster arm bush F98, front suspension bush X4M 2019+, performance suspension bushings, Black Series 95A bush, front axle bush BMW F98.