Powerflex Black Series Rear Upper Wishbone Inner Bush PFR5-4617BLK BMW E46 E36 Z4 E85 E86 E89 M3 Z4M | Rear Upper Control Arm Inner Bushing | Replaces 33321092247

Rear Top Arm Inner Mount Set for BMW E36 E46 Z4 and M3 - Powerflex Black Series - PFR5-4617BLK

Take control of your BMW’s rear geometry with this track-focused polyurethane inner mount set for the rear upper arm. Built in a 95 Shore A compound, this Black Series polybush upgrade keeps camber and toe steady under load, tightens the rear end, and transforms response on fast road, drift and circuit use. If you are chasing sharper turn-in, repeatable alignment and improved traction out of corners, this PFR5-4617BLK kit delivers serious results with standout durability.

We run these bushes on our own builds at MJ Modifications and on customer cars, and the feedback is consistently positive. Expect cleaner feedback through the chassis, better rear axle stability and confidence-inspiring grip when pushing hard.

Why this upgrade works

• 95A performance polyurethane to limit arm deflection and keep settings consistent
• Holds camber and toe during braking, acceleration and heavy cornering
• Sharper steering response and improved rear-end bite on track days and fast road
• Resistant to oil, fuel, road salt and heat for long service life
• Direct-fit replacement for the factory rubber mount for a precise installation
• Black Series is Powerflex’s stiffest blend for maximum control of suspension geometry

In the box

• 2 x rear upper arm inner bushes

Quantity required per vehicle: 2 bushes. This kit covers one car.

Part numbers

Powerflex reference: PFR5-4617BLK
Replaces BMW OE: 33321092247

Vehicle applications

• BMW E36 including M3 1990 to 1998
• BMW E46 Compact
• BMW E46 M3 including CSL
• BMW E46 Saloon, Touring, Coupé, Convertible
• BMW E46 Xi and XD 4WD
• BMW Z1 1988 to 1991
• BMW Z4 E85 and E86 2003 to 2009
• BMW Z4 E89 2009 on
• BMW Z4M E85 and E86 2006 to 2009

Fitting and setup

• Professional installation recommended to ensure correct alignment
• We offer fitting at MJ Modifications in Warwickshire. Request a quote via info@mjmodifications.co.uk
• Download the official guide: Powerflex installation instructions

Fitment check before dispatch

We will verify compatibility before shipping. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm PFR5-4617BLK suits your specific BMW.

Performance-focused search terms

BMW rear camber link bush, rear top wishbone inner mount, rear upper arm pivot bushing, E46 handling upgrade, E46 M3 alignment upgrade, E36 rear arm bushing, Z4 E85 camber arm mount, Z4 E86 bushing kit, Z4 E89 suspension upgrade, Z4M rear arm inner bush, polyurethane camber link bushes, track day suspension BMW, drift suspension BMW, time attack setup BMW, high durometer polybush BMW, motorsport bush kit BMW, rear wishbone inner mount BMW, BMW 33321092247 replacement, PFR5-4617BLK Black Series.