Powerflex PFR5-715 Rear Upper Control Arm Outer Suspension Bushes for BMW 6 Series E63/E64 2003-2010 (645Ci 650i M6) – Polyurethane Integral Link/Wishbone Bushings Pair – Rear Link Arm Bushing Upgrade – OE 33326770749

Dial-in rear-end precision for BMW 6 Series E63 E64

Upgrade the back end of your BMW 6 Series with Powerflex PFR5-715, a pair of uprated urethane rear upper control arm outer bushings. Designed for E63 coupe and E64 convertible models from 2003 to 2010, these performance bushes replace tired OE rubber to tighten up the integral link and deliver crisp handling, better stability and long-lasting durability. If your car wanders, tramlines, feels loose mid-corner or scuffs tyres, this is the fix that lasts.

We fit these on our own builds and customer cars because they transform chassis response without adding harshness. Feedback from owners is consistently positive: cleaner turn-in, calmer braking, less rear steer and geometry that stays set mile after mile.

Why this upgrade works

• Minimises unwanted movement in the rear link arm for predictable cornering and confidence on road or track
• Helps maintain correct alignment to reduce uneven tyre wear and improve braking stability
• Sharper steering feel and better feedback compared to ageing factory rubber
• Engineered polyurethane resists oil, salt and heat for long service life
• Direct-fit replacement that outlasts standard bushes and supports consistent geometry
• Covered by the Powerflex Lifetime Warranty

What you receive

• Part number: PFR5-715
• OE reference: 33326770749
• Diagram reference: 15
• Quantity: 2 bushes (pair)

Fitment

BMW 6 Series E63 E64 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010. Coupe and Convertible rear suspension. Replaces the outer bush on the upper integral link arm. Also searched as rear upper control arm outer bush, rear link arm bushings, integral link outer bush, rear wishbone bush, urethane suspension bushings, poly suspension bushes for BMW 6 Series.

Results you can feel

Expect a tighter rear axle, improved straight-line stability, reduced mid-corner squirm and more consistent alignment after setup. Great for spirited road driving, fast-road builds and track-day cars that need dependable chassis precision.

Installation and support

Professional fitting recommended. A press and correct support tools are required, and a four-wheel alignment should be carried out after installation.

For expert fitting, choose MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Shop with confidence

MJ Modifications supplies and installs uprated suspension components every day. We rate these bushes highly for build quality, fit and real-world improvements in handling and tyre life.

Common searches: BMW E63 suspension upgrade, BMW E64 rear arm bush, BMW 6 Series handling kit, rear control arm bushing upgrade, polyurethane rear link bushes, chassis bushes BMW 6 Series, OE 33326770749 replacement, Powerflex PFR5-715 pair.