Powerflex PFR5-423 Rear Subframe Rear Mounting Polyurethane Bush Inserts (2) for BMW 3 Series E90 E91 E92 E93 20052013

PFR5-423 Rear Cradle Rear Mount Insert Kit for BMW 3 Series E90 E91 E92 E93 2005 to 2013

Part number: PFR5-423

Diagram reference: 20

Pack contents: 2 x rear cradle rear mount inserts

Transform the feel of your E9x chassis with this uprated rear cradle insert kit. By supporting the original back axle carrier mounts, these precision polyurethane inserts limit unwanted movement in the rear end, giving you crisper turn in, a more planted tail, stronger traction and a tighter, more confidence inspiring drive on fast road or daily use. We run these on our own builds and customer feedback has been excellent for stability, grip and predictability without the soggy, vague feel of ageing rubber.

• Sharper rear axle control for cleaner power delivery and consistent cornering
• Reduces subframe flex compared with tired factory rubber pieces
• Keeps the tyres working evenly for better contact and improved confidence in the wet
• Balances performance with comfort and NVH control for road use
• Durable polyurethane resists oil, heat and ageing for long service life
• Backed by Powerflex Lifetime Warranty for peace of mind

Fitment and compatibility

BMW 3 Series E90 saloon, E91 touring, E92 coupe, E93 convertible, model years 2005 to 2013.

Fits: Diesel models, and all E91 touring petrol and diesel.

Petrol models excluding E91 touring: use PFR5-421 inserts or consider the complete replacement bushes PFR5-422.

Why choose these uprated inserts

Factory rubber softens over time, leading to rear cradle shift under load, imprecise alignment and a floaty back end. These inserts reinforce the original mountings to reduce deflection, stabilise geometry and improve chassis response. Expect a more connected drive, better straight line stability and reduced wheel hop on acceleration. Our customers consistently report a more solid rear end feel with no drama and minimal increase in cabin noise when compared with worn OE bushes.

Installation and support

Insert design fits into the existing rear cradle rear mounting bush for a straightforward upgrade without pressing out the original part. A professional four wheel alignment is recommended after suspension work.

Want it fitted by experts? MJ Modifications in Warwickshire can install and align these for you. Request a fitting quote at info@mjmodifications.co.uk.

Cross reference

BMW OE reference for identification only: 33 31 6 768 645.

What you get

2 x high quality polyurethane rear cradle rear mount inserts with associated fitting grease.

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