PFR5-306 Poly Bush Rear Trailing Arm Mounts for BMW Z3

Transform the rear end of your E36-based Z3 with this uprated polyurethane RTAB kit. PFR5-306 replaces the factory rubber trailing arm mounts that soften over time, helping to cure rear axle wander, tramlining and uneven tyre wear. This 4-piece bushing set is a direct replacement for OE part 33329061945 and is a proven upgrade for Z3 models built from 1994 to 2002.

What this upgrade delivers

• Far sharper chassis response with more precise rear toe control
• Confidence-inspiring stability under braking and during quick direction changes
• More consistent alignment to protect tyres and improve grip
• Durable polyurethane construction that resists ageing and deformation
• Excellent road manners with minimal NVH for fast-road use
• Great value handling improvement backed by Powerflex Lifetime Warranty

Key product details

• Brand: Powerflex
• Application: BMW Z3 rear trailing arm positions
• Part number: PFR5-306
• OE cross reference: 33329061945
• Quantity in kit: 4 bushes
• Diagram reference: 5
• Model years covered: 1994–02 Z3 Roadster and Coupé

Real results our customers feel

After installation, owners report a planted rear axle, more predictable turn in and a calmer steering wheel over poor surfaces. At MJ Modifications we have fitted this kit many times and it remains a customer favourite for a genuine step change in control without harshness.

Typical problems this kit solves

• Rear end wandering or nervous behaviour on B-roads and motorways
• Braking instability and mid-corner corrections
• Clunks or knocks from tired factory rubber mounts
• Accelerated or uneven rear tyre wear due to toe change

Why choose polyurethane for your Z3

• Superior wear resistance compared with stock rubber
• Maintains geometry under load for consistent handling
• Ideal for daily-driven cars and weekend performance builds
• Fit once and forget thanks to long service life

Professional fitting available

For installation and alignment, book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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Genuine Powerflex parts supplied by enthusiasts who install what they sell. Upgrade your Z3 today with PFR5-306 and enjoy a tighter, more composed drive.