Powerflex Rear Subframe Rear Bush Insert for BMW 3 Series F30 F31 F34 - PFR5-1921
Upgrade the rear end stability of your BMW 3 Series with the Powerflex Rear Subframe Rear Bush Insert, part number PFR5-1921. Designed specifically for BMW F30, F31 and F34 platforms, this polyurethane bush insert fits into the voids of the original rear subframe bush to reduce unwanted subframe movement and tighten up handling. If you are searching for BMW F30 rear subframe bush insert, BMW 3 Series poly bushes, Powerflex PFR5-1921 or BMW F31 F34 suspension upgrade, this is the solution that delivers sharper handling and improved road holding.
What it does
This insert fits into the existing OE rubber bush to control flex without replacing the whole bush. By limiting subframe deflection, it helps your suspension do its job properly for more precise steering response, better traction on corner exit and greater braking stability, all while maintaining excellent NVH control.
Why choose Powerflex polyurethane bushes
Powerflex poly bushes are engineered to improve chassis performance by reducing the unwanted movement inherent in ageing or soft rubber bushes. The result is more consistent geometry, better tyre contact with the road and a noticeable improvement in overall handling. Correctly formulated polyurethane can equal or surpass rubber for noise, vibration and harshness suppression, making it ideal for fast-road and track day BMWs.
- Sharper, more predictable handling
- Reduced rear subframe movement for improved stability
- Better traction and cornering confidence
- More consistent braking performance
- Prolonged tyre life and improved cost effectiveness
- Lifetime warranty for peace of mind
Fitment and key details
Vehicle fitment: BMW 3 Series F30 Saloon, F31 Touring, F34 Gran Turismo.
Powerflex part number: PFR5-1921
OEM cross reference: 33316792510
Diagram reference: 21
Number of bushes in the pack: 2 inserts
Real-world results
We have installed these Powerflex rear subframe bush inserts on our own builds and for customers, with consistent feedback of a tighter rear end, reduced squirm under hard acceleration and a more planted feel on B roads and motorway cruising alike.
Fitting service
Professional fitting available at Nforcd in Warwickshire. Request a quote at Sales@nforcd.com and our team will be happy to help with installation and advice on complementary BMW F30 F31 F34 suspension upgrades.
Common searches this product matches
BMW F30 rear subframe bush insert, BMW F31 rear subframe bush, BMW F34 rear subframe insert, Powerflex PFR5-1921, Powerflex rear subframe rear bush, BMW 3 Series poly bushes, polyurethane suspension bushes BMW, BMW 3 Series handling upgrade, rear subframe insert for OE bush 33316792510, performance car parts UK, BMW suspension upgrade F30 F31 F34.
Eliminate imprecise handling, uneven tyre wear and braking instability caused by soft or ageing rubber bushes. Choose Powerflex PFR5-1921 and transform the way your BMW 3 Series drives.