Powerflex Polyurethane Rear Anti-Roll Bar/Sway Bar/Stabiliser Bar Bushes 19mm (Pair) for BMW Z4 E89 2009-on | Roll Bar Mounting Clamp Bushings | Poly Bush Upgrade | PFR5-504-19

Powerflex Rear Stabiliser Bar Bushings 19 mm for BMW Z4 E89 2009 onwards | Part No. PFR5-504-19

Unlock sharper handling and rock-solid chassis control on your BMW Z4 E89 with these 19 mm Powerflex rear stabiliser bar bushings. Designed to replace tired factory rubber, this polyurethane pair tightens up the rear end, boosts steering precision and keeps the car flatter and more predictable during quick direction changes and hard braking. If you want a fast road and track-ready upgrade that lasts, this is the set to fit.

• Part number: PFR5-504-19
• Vehicle: BMW Z4 E89 2009 onwards
• Location: rear stabiliser bar clamps
• Bar size: 19 mm
• Supplied as: pair of bushes
• Warranty: Powerflex Lifetime Warranty

What you will feel

• Quicker turn in and more direct steering feel
• Reduced body roll for flatter, faster cornering
• Improved tyre contact for better grip and traction
• More stable braking and mid corner composure
• Consistent performance that does not degrade like rubber

Powerflex polyurethane resists oil, road salt and heat, so it keeps your stabiliser bar working exactly as intended. By controlling bar movement at the rear, these bushes cut slop and deliver the crisp, confidence inspiring response Z4 owners want. We have fitted this kit on customer cars in our workshop and the feedback is excellent, with owners reporting cleaner feedback through the wheel and a noticeable handling upgrade from a simple, cost effective change.

Fitment notes

• Confirm your roll bar diameter is 19 mm before ordering. Measuring the bar is recommended.
• Fits BMW Z4 E89 models built from 2009 onwards.
• Position corresponds to diagram reference 4.

Why enthusiasts choose this upgrade

Looking for a Z4 E89 handling mod that works on UK roads and track days alike. These uprated rear sway bar bushings deliver precision, durability and value. Ideal as a performance suspension refresh, a poly bush upgrade, or as part of a wider chassis tuning package that targets roll control and steering accuracy.

Cross references

OEM references for identification: 33551094551, 33551138326.

Professional installation

Prefer expert fitting. Book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search friendly terms

BMW Z4 E89 rear stabiliser bushings, Z4 19 mm sway bar bush kit, rear roll bar clamp bushes BMW, polyurethane suspension bush upgrade, Z4 handling upgrade UK, performance chassis bushes, anti roll bar rear bush pair, Powerflex PFR5-504-19, Z4 E89 suspension refresh, track day suspension bushes, uprated rear bar mounts, poly bush BMW Z4 roadster.