PFR5-1920 – Rear Subframe Front Insert – M135i M140i M235i M240i

The Powerflex PFR5-1920 Rear Subframe Front Bush Insert is a Road Series polyurethane insert designed to stiffen the front mounting points of the rear subframe on BMW F2X/F3X chassis, including the M135i, M140i, M235i and M240i. This insert fills the voids in the factory bush, reducing subframe movement and greatly improving rear-end stability without the harshness of a full replacement bush.

SKU: PFR5-1920
Position: Rear Subframe – Front Bush Insert

Key Features

Road Series Polyurethane

– Firmer than OEM rubber, ideal for fast-road use
– Fills the voids in the original subframe bush
– Reduces unwanted subframe flex under load

Enhanced Rear Stability

– Keeps the subframe located properly
– Improves control during hard acceleration and cornering
– Reduces rear-end float and chassis movement

Sharper Driving Dynamics

– More predictable rear axle behaviour
– Improved traction and turn-in stability
– Ideal for tuned M135i/M140i/M235i/M240i builds

Quick & Effective Upgrade

– Inserts into OEM bush (no pressing required)
– Minimal NVH increase
– Cost-effective handling improvement

Benefits

The PFR5-1920 insert provides a noticeable improvement to the chassis feel of the F2X/F3X platform. Rear-end stability is increased, traction is improved and the car feels more planted and more confident during spirited driving. Perfect for everyday performance builds and Stage 1/2 cars.

Fitment

Suitable for:
– BMW M135i (F20/F21)
– BMW M140i (F20/F21)
– BMW M235i (F22/F23)
– BMW M240i (F22/F23)
– Also suitable for many non-M-Lite RWD F2X/F3X models

SKU: PFR5-1920
Position: Rear Subframe – Front Insert

Installation Notes

– Installs into the factory front subframe bush
– No removal or pressing required
– Slight NVH increase possible
– Professional installation recommended

About Powerflex

Powerflex Road Series bushes offer improved stability, longevity and precision compared to OEM rubber, while maintaining comfort for daily use. Ideal for fast-road and tuned BMW builds.