Powerflex Poly Bushes Pack – Rear Shock Top Mount Bush 12mm – PFR5-5630-12 – BMW E46 3 Series M3
Upgrade your BMW E46 M3 rear suspension with the Powerflex PFR5-5630-12 rear shock top mount bushes. These performance polyurethane bushes are engineered to reduce unwanted suspension flex, sharpen handling, improve stability, and maximise tyre contact for fast-road and track-day driving. A proven upgrade for the E46 3 Series M3, delivering tighter, more precise steering feel and confidence under load.
Part number: PFR5-5630-12
Compatibility: BMW E46 3 Series M3 rear shock top mount bracket using a 12 mm pin. Will not fit E36 or E46 Cabriolet models.
Why choose Powerflex polyurethane rear shock top mount bushes for your E46 M3
- Improves handling precision and cornering stability
- Reduces unwanted movement compared to ageing rubber bushes
- Better tyre contact and feedback for road and track use
- Prolonged tyre life and improved braking stability
- Excellent NVH control for a compliant yet controlled ride
- Greater cost-effectiveness over the life of the vehicle
- Backed by a Lifetime Warranty
We have installed these on our own builds and customer cars, and the feedback is consistently positive. Expect a sharper rear end, more predictable grip, and a solid, confidence-inspiring feel from the back of the car.
Fitment and sizing guide
This 12 mm version suits aftermarket rear shock absorbers that use a 12 mm shaft or pin at the top mount. If your shock uses a 10 mm shaft, choose PFR5-5630-10 instead.
Typical rear shock shaft diameters:
- Original BMW: 10 mm
- AST: 10 mm
- Bilstein HD, Sport, PSS Coilovers: 10 mm
- FK Coilovers: 10 mm
- H&R Coilovers: 10 mm
- JRZ RS: 12 mm
- Koni Sport: 10 mm
- KW V1, V2, V3: 10 mm
- ST Coilovers: 10 mm
- Tein Coilovers: 12 mm
The above list is a guide only. If your shock brand is not listed, measure the outside diameter of the rear shock shaft to confirm whether you need PFR5-5630-10 or PFR5-5630-12.
Important: Will not fit E36 or E46 Cabriolet models.
Pack contents
- Number of bushes in the pack: 2
- Diagram Reference: 30
Installation and support
Professional fitting available at Nforcd in Warwickshire. For a quote or to book, email Sales@nforcd.com.
Search-friendly references
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References: 33521092362, 33526779670

