Powerflex Road Series PFR5-421 Rear Subframe/Rear Axle Carrier Mount Bush/Bushing Inserts (Pair) for BMW 1 Series E81 E82 E87 E88, 3 Series E90 E91 E92 E93 xDrive AWD/xi, X1 E84 | Polyurethane Poly Bush Kit | OE 33316758260

Powerflex PFR5-421 Rear Axle Carrier Rear Mount Inserts for BMW E8x, E9x AWD, and E84

Transform the way your BMW feels from behind the wheel. The Powerflex PFR5-421 urethane insert kit locates the rear axle carrier more precisely, cutting sub-frame movement and tightening up the chassis for a planted, confidence-inspiring drive on the road. Ideal for daily use and spirited fast-road setups on BMW 1 Series E81 E82 E87 E88, BMW 3 Series E9x xDrive (E90 E91 E92 E93 AWD), and BMW X1 E84.

We run these inserts on our own cars and the feedback from our customers is consistently positive: cleaner turn-in, better traction out of bends, and a calmer rear end under braking with noticeably improved tyre wear. A small upgrade that delivers a big result.

Key advantages

• Reduces rear cradle deflection for sharper steering response and predictable handling
• Improves stability under acceleration and braking, especially on uneven surfaces
• Enhances rear-end grip and traction for fast-road driving
• Durable polyurethane construction resists oil, salt, heat, and road contaminants
• Cost-effective handling upgrade with long service life

Fitment

• BMW 1 Series: E81, E82, E87, E88 (2004 to 2013)
• BMW 3 Series: E9x xDrive AWD – E90, E91, E92, E93 (2008 to 2015)
• BMW X1: E84 including xDrive (2008 to 2015)

Part numbers

• Manufacturer reference: PFR5-421
• OE cross reference: 33316758260

What you receive

• 2 x rear axle carrier rear mounting insert bushes
• Quantity required per vehicle: 2 inserts

Installation

Professional fitting recommended for best results. MJ Modifications can supply and install at our Warwickshire workshop. Request a fitting quote: info@mjmodifications.co.uk

Fitting instructions: Download the official Powerflex guide

Diagram

Reference position: 20

Compatibility check

We verify fitment before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout to ensure the correct kit for your car.

Manufacturer

Powerflex

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