Upgrade your BMW 1 Series F20 F21 front suspension with Powerflex Track Front Radius Arm To Chassis Bushes from the Black Series. Engineered for track and motorsport, these high-performance polyurethane bushes deliver maximum control of chassis geometry and a sharper, more precise drive. If you want tighter steering, improved stability under braking and cornering, and reduced bushing deflection, this is the proven suspension upgrade for serious drivers.
Made from Powerflex Black 95 Shore A compound, these bushes are over 200% stiffer than the original rubber items, helping to keep alignment true, maintain caster, and resist the increased loads seen on track-driven cars. We have fitted and used these ourselves and our customers have been extremely happy with the results.
Key features and benefits
- Powerflex Black Series compound for track and motorsport use
- Over 200% stiffer than OEM rubber to reduce unwanted movement
- Improves steering precision, front-end stability, and handling consistency
- Helps maintain alignment and caster under heavy braking and cornering
- Durable polyurethane construction designed to withstand high loads
- Direct replacement for the factory front radius arm to chassis bush
Fitment and compatibility
BMW 1 Series F20 F21
Track-focused front radius arm to chassis bushes designed as a direct upgrade for the front control arm mounting point.
Technical details
- Series: Powerflex Black Series
- Compound: Black 95 Shore A
- Number of bushes in pack: 2
- Diagram reference: 1
- Replaces OEM bush part numbers: 31126855743, 31126855741, 31126855742
- For a caster offset version please use: PFF5-1901GBLK
Why choose this upgrade
If you are building a fast road, track day, or full motorsport BMW 1 Series F20 F21, these front radius arm to chassis bushes are a must-have suspension upgrade. The increased stiffness controls geometry under load for better turn-in, confidence-inspiring feedback, and consistent lap-after-lap performance.
Professional fitting available
Want it fitted by specialists? Nforcd in Warwickshire can install these bushes for you. Request a fitting quote at Sales@nforcd.com.
Search-friendly terms
Powerflex Black Series front radius arm to chassis bushes for BMW 1 Series F20 F21. Front control arm bushes. Front wishbone bushes. Radius rod bush. Lollipop bush. Polybush. Polyurethane suspension bushes. BMW F20 bushes. BMW F21 bushes. Track suspension upgrade. Motorsport bushings. Handling upgrade. Steering precision. Suspension geometry control. Performance car parts.