Powerflex PFR5-722 Rear Subframe & Axle Carrier Mount Bushes Kit for BMW 6 Series E63/E64 2003-2010 (645Ci 650i M6) Polyurethane Polybush Rear Cradle Bushings Pair | OE 33316770826 Replacement

Rear axle carrier rear mount kit for BMW 6 Series E63 E64 2003 to 2010 - Powerflex PFR5-722

Sharpen the feel of your 6 Series and stop the back end squirming under load with this uprated polyurethane rear axle carrier mount kit. Powerflex PFR5-722 replaces tired factory rubber with a performance compound that keeps the subframe located, improves stability and gives you confidence on B-roads, motorways and track days alike.

Expect crisper turn-in, more consistent alignment, better traction and reduced rear steer when braking or accelerating hard. We have fitted these in-house and customers consistently report a more planted, predictable chassis with no unwanted harshness. Genuine Powerflex quality with a lifetime warranty for long-term peace of mind.

Why this upgrade works

• Limits subframe movement for precise geometry control and predictable handling
• Improves grip and braking stability by keeping the rear tyres in their optimum contact patch
• Helps reduce uneven tyre wear caused by excessive bush deflection
• Durable polyurethane resists oil, road salt and ageing far better than OE rubber
• Refined NVH characteristics suitable for daily road use and spirited driving

Compatibility and part details

• Vehicle fitment: BMW 6 Series E63 and E64 coupe and convertible - 2003 to 2010
• Location: rear axle carrier to body rear mounts
• Powerflex part number: PFR5-722
• Contents: pair of bushes with sleeves - 2 pieces
• Diagram reference: 21
• Insert alternative if retaining original bushes: PFR5-721
• OE cross reference for guidance: 33316770826

Who is it for

Ideal if your E63 E64 feels floaty at the rear, wanders over bumps, or exhibits clunks and imprecise behaviour when pushing on. Perfect for owners seeking a performance suspension refresh, a road-friendly upgrade or a reliable solution for fast-road builds.

Professional fitting

Want it fitted by specialists who know BMW chassis inside out? Book installation with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

What our customers say

We use and recommend Powerflex on our own builds. Feedback from 6 Series owners is consistently positive - firmer, more controlled rear end feel, improved steering precision and a noticeable reduction in rear-end float without compromising comfort.

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