Powerflex Black Series PFR5-421BLK Rear Subframe/Cradle Mount Insert Bush Kit for BMW 1 Series E81 E82 E87 E88 & 3 Series E90 E91 E92 E93 (incl xDrive) - Polyurethane Polybush Bushings - Rear Axle Carrier Inserts - OEM 33316758260

Powerflex Black Series PFR5-421BLK Rear Axle Carrier Rear Mount Insert Kit for BMW E8x and E9x

Transform the way your BMW turns in, puts power down and tracks straight with this competition grade rear axle carrier rear mount insert kit. Powerflex Black Series PFR5-421BLK inserts are engineered from 95A polyurethane to limit cradle movement, keep rear alignment true under load and deliver a planted, confidence inspiring drive on 1 Series E81 E82 E87 E88 and 3 Series E90 E91 E92 E93, including xDrive models.

Ideal for fast road, track day, drift and time attack builds, these hard wearing poly inserts locate in the voids of the factory rear mount to reduce deflection, cut wheel hop and stabilise the back end without the hassle of a full bush replacement. At MJ Modifications we have installed this kit on customer cars and our own development vehicles, and the feedback on grip, feedback and consistency has been outstanding.

Key benefits

• Stiffens the rear cradle for precise geometry retention during cornering and hard acceleration
• Sharper response, improved traction and more predictable handling on road and circuit
• Durable 95A polyurethane for maximum control and long service life
• Insert design fits the OE bush for a straightforward upgrade
• xDrive compatible on E9x platforms

Vehicle compatibility

BMW 1 Series

• E81, E82, E87, E88

BMW 3 Series

• E90, E91, E92, E93 including xDrive

Part numbers

• Powerflex part number: PFR5-421BLK
• OEM cross reference: 33316758260

What you receive

• 2 x rear axle carrier rear mount insert pieces
• Quantity required per vehicle: 2 inserts

Fitment help and verification

We will confirm compatibility before dispatch. Add your UK registration number or the last 7 digits of your VIN at checkout and our team will verify the correct application for your BMW.

Professional installation

Book fitting with MJ Modifications in Warwickshire. Request a quote via info@mjmodifications.co.uk and our workshop will get you sorted quickly and correctly.

Resources

Download the installation guide

Diagram

Reference position: No. 20

Why buy from us

Genuine Powerflex product supplied by enthusiasts who build, fit and test these parts. Customers consistently report tighter rear end control, better stability at speed and a more direct feel from the chassis.

Search terms to help you find this item

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