Powerflex PFR5-4617 Rear Upper Control Arm Inner Polyurethane Bush Kit (Pair) for BMW Z4 E89 2009-on OE 33321092247

BMW Z4 E89 Rear Top Wishbone Inner Mount Upgrade – PFR5-4617

Transform the rear end of your BMW Z4 E89 with this premium poly bush pair for the upper link inner pivot. Replacing tired factory rubber with high-grade polyurethane gives crisper turn-in, rock-solid geometry control and a more planted feel on fast road and track use. Direct swap for OE 33321092247, this kit delivers long-term precision without the soggy response of ageing rubber.

Part number: PFR5-4617

Vehicle compatibility: BMW Z4 E89 2009 onwards

OE cross-reference: 33321092247

Diagram reference: 17

What is included: 1 x pair of rear upper link inner bushes plus assembly grease

Why this poly bush kit is a must for your Z4 E89

• Sharpened rear axle control for confident cornering and predictable balance
• Maintains camber and toe under load for superior road holding and reduced tyre scrub
• Stable braking and cleaner power delivery on exit thanks to reduced arm deflection
• Durable polyurethane resists degradation for consistent performance over high mileage
• Helps extend tyre life by keeping alignment steady
• Backed by a Lifetime Warranty for peace of mind

We have fitted this upgrade to customer E89 cars and to our own builds at MJ Modifications. Feedback has been superb, with owners praising the tighter rear-end feel, improved composure over bumps and more confidence when pushing on B-roads or at the circuit.

Perfect for fast road and track-day enthusiasts

If your Z4 feels vague or nervous at the back, worn rubber mounts are often to blame. This polyurethane inner mount set brings back precision, helps the car hold alignment and gives consistent feedback lap after lap. It is a simple, high-value upgrade that complements performance tyres, coilovers and geometry setups.

Fitting and support

Professional installation and a four-wheel alignment are recommended to maximise results. MJ Modifications in Warwickshire offers expert fitting and setup. For a tailored quote, email info@mjmodifications.co.uk.

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Upgrade your Z4’s rear axle confidence today with PFR5-4617 and enjoy precise steering feel, better stability and lasting performance.