Powerflex Black Series Track Front Tension Strut / Radius Arm Polyurethane Bush Kit for BMW 3 Series G20 G21 (2018+) - Control Arm, Caster Arm, Wishbone Bushes - PFF5-2501BLK

Poly Bush Kit for BMW 3 Series G20 G21 Front Tension Strut | Part No. PFF5-2501BLK

Unlock sharper turn-in, better braking stability and consistent front-end grip with this high-performance polyurethane bush kit for the BMW 3 Series G20 and G21 platform from 2018 onwards. Precision engineered in Black 95A material and supplied with outer shells, this upgrade delivers up to a 300% increase in stiffness to minimise arm deflection and control longitudinal wheel movement under load.

Ideal for track days, fast road builds and motorsport-focused setups, these front axle bushes transform feedback through the steering and improve confidence mid-corner. We have installed these in-house and customer feedback has been superb, praising the immediate boost in response and long-term durability compared to tired rubber components.

Why choose this upgrade

• Designed for the front tension strut radius arm on BMW G20 and G21 3 Series
• Black 95A polyurethane for maximum control and longevity
• Supplied with outer shells to increase stiffness by up to 300%
• Reduces brake dive and improves stability under hard braking
• Enhances steering precision and consistency during cornering
• Direct replacement for factory items with improved wear resistance

Fitment and compatibility

Suitable for BMW 3 Series G20 and G21 models from 2018 onwards. This kit targets the front lower control arm assembly commonly known as the tension strut, wishbone or radius arm.

Technical details

• Part number: PFF5-2501BLK
• Material hardness: Black 95A polyurethane
• Number of bushes in pack: 2
• Includes outer shells for added rigidity
• Diagram reference: 1
• Replaces OE numbers: 31106894667 and 31106894668

Common search terms

BMW G20 front control arm bush, BMW G21 front lower arm bushing, front wishbone bush kit, tension strut bush, front axle poly bushes, caster arm bush, polyurethane suspension bushes, Black Series bushes, track day suspension upgrade, BMW 3 Series handling upgrade.

Professional installation

For fitting, we recommend booking with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk and our team will be happy to help.