Powerflex PFF5-5601G Poly Front Wishbone Rear Bush (FCAB) Caster Offset 66mm BMW Z4M E85/E86 20062009 Fits 66mm Aluminium Housing, E46 Compatible OEM 31126783376

PFF5-5601G Caster-Offset FCAB for BMW Z4 M E85 E86 and E46 with 66 mm Alloy Carrier

Transform steering feel, stability and cornering precision with the PFF5-5601G front control arm rear-position bushing. Engineered for the Z4 M Roadster and Coupe plus E46 models that use the 66 mm alloy lollipop bracket, this high-performance polyurethane mount increases positive caster for crisper turn-in, improved self-centring and greater straight-line composure on fast road and track.

Part number: PFF5-5601G
OE reference: 31126783376
Diagram ref: 1
Supplied as: 2 x bushes
Housing size: 66 mm alloy carrier

Why this FCAB upgrade works

• Offset design adds extra positive caster for better lane stability, quicker response off-centre and more confident turn-in.
• Hard-anodised alloy outer with a low-friction rotating inner keeps the arm moving freely to cut stiction and binding.
• Minimised compliant material controls arm movement so geometry stays consistent under braking and cornering loads.
• Approximately 128 percent stiffer than tired OE rubber for precise feedback without the vagueness of standard bushes.
• Optional Black Series variant is stiffer again, delivering around 190 percent over OE for dedicated track work.
• Durable polyurethane delivers long service life with excellent NVH manners compared to ageing rubber components.
• Backed by the Powerflex lifetime guarantee for total peace of mind.

Fitment and sizing

Designed for vehicles using the 66 mm alloy lollipop bracket. Perfect for BMW Z4 M E85 and E86 models built 2006 to 2009 and also suits E46 applications that utilise the 66 mm carrier. Please verify your carrier diameter before ordering.

On-road and track benefits

• Sharper steering accuracy and reduced tramlining.
• Improved braking stability and cornering consistency.
• Better alignment control that can help prolong tyre life.
• Strong value over time thanks to robust materials and the lifetime guarantee.

Trusted by MJ Modifications

We run these bushes on our own builds and customer cars with excellent feedback on steering precision, self-centring and overall driveability. For professional installation, MJ Modifications in Warwickshire can help. Request a fitting quote at info@mjmodifications.co.uk.

Compatibility keywords and searches

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Choose PFF5-5601G for a direct-fit, high-quality upgrade that delivers tighter geometry control and confidence on every drive.