Powerflex Black Series Rear Subframe Bush Insert Kit (Pair) for BMW 3 Series F30 F31 F34 - Track - PFR5-1921BLK - Replaces 33316792510
Powerflex Black Series Rear Subframe Bush Insert Kit (Pair) for BMW 3 Series F30 F31 F34 - Track - PFR5-1921BLK - Replaces 33316792510
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  • Load image into Gallery viewer, Powerflex Black Series Rear Subframe Bush Insert Kit (Pair) for BMW 3 Series F30 F31 F34 - Track - PFR5-1921BLK - Replaces 33316792510

Powerflex Black Series Rear Subframe Bush Insert Kit (Pair) for BMW 3 Series F30 F31 F34 - Track - PFR5-1921BLK - Replaces 33316792510

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Powerflex Track Rear Subframe Rear Bushes Insert for BMW F30 F31 F34 3 Series

Part Number: PFR5-1921BLK

Replaces OEM: 33316792510

Diagram Reference: 21

Unlock sharper handling and rear-end stability on your BMW 3 Series with the Powerflex Black Series rear subframe bush inserts. Engineered for track and motorsport use, these high-performance polyurethane inserts fit into the voids of the factory rear subframe bushes to reduce subframe movement and tighten up chassis control. The result is improved precision, traction and confidence when pushing hard on circuit or fast road.

At Nforcd, we run Powerflex Black Series on our own cars and our customers consistently praise the immediate improvement in rear-end response and stability. If you want a proven BMW F30 F31 F34 handling upgrade that works, this is it.

Key features

  • Powerflex Black Series 95 Shore A compound for maximum control of chassis geometry
  • Insert design fits into the voids of the original rear subframe bush to reduce movement
  • Sharper turn-in, more stable cornering and improved traction under load
  • Ideal for track, time attack and fast road builds seeking a firmer, more connected rear end
  • Quicker install than full bush replacement as the OEM bush remains in place
  • Durable polyurethane that resists oil, road salt and heat better than rubber

Compatibility

BMW 3 Series F30 Saloon, F31 Touring, F34 Gran Turismo. If you are unsure about fitment, contact our team and we will be happy to help.

What you get

  • Number of inserts in pack: 2
  • Powerflex Black Series specification

Why choose this upgrade

  • BMW 3 Series rear subframe bush insert upgrade for reduced flex and tighter handling
  • Proven Powerflex performance on track-focused BMW F30 F31 F34 builds
  • Popular performance suspension mod for enthusiasts seeking a precise, planted rear

Installation and fitting

Professional fitting recommended. We offer in-house installation at Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.

Notes

  • Black Series is designed for track and motorsport use
  • Expect an increase in NVH compared to standard rubber bushes

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