Powerflex Rear Differential Mount Bush/Bushing for BMW M3/M4 F80 F82 F83 (F8x) 2014-on | Polyurethane Polybush Diff Mount Final Drive Drivetrain Performance Upgrade | PFR5-4026 | Replaces 33177852495

Powerflex PFR5-4026 Rear Differential Mounting Bushing for BMW F80 F82 F83 M3 M4

Transform the way your F8x M car puts power down with this uprated rear final drive mount from Powerflex. By replacing the tired factory rubber with a high performance polyurethane bushing, you stabilise the differential under load for crisper throttle pick up, cleaner gear changes and a more connected rear axle feel. Perfect for fast road use, spirited driving and track days on BMW F80 M3, F82 M4 and F83 M4 Convertible models from 2014 onwards.

Part number: PFR5-4026
Direct replacement for BMW part: 33177852495

Why this upgrade makes a difference

• Integrated support washer helps control differential movement during acceleration and deceleration
• Polyurethane construction resists flex and degradation far better than ageing OE rubber
• Sharper drivetrain response with reduced diff wind up and less axle tramp
• Improved rear end precision without a harsh ride when paired with healthy mounts and bushings
• Direct fit, no custom fabrication required, designed and engineered by Powerflex

At MJ Modifications we have installed this component on our own builds and customer vehicles with excellent feedback. Owners report a tighter rear end, more consistent traction on rough surfaces, reduced wheel hop and confidence when putting the S55’s torque to the ground.

Fitment

• BMW M3 F80 Saloon 2014 onwards
• BMW M4 F82 Coupé 2014 onwards
• BMW M4 F83 Convertible 2014 onwards

What you receive

1 x rear differential rear mounting bushing. Quantity required per vehicle: 1.

Installation

Professional fitting is recommended. Book your installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Download the Powerflex fitting guide

Compatibility check before dispatch

We will confirm fitment before shipping. Add your UK registration or the last 7 digits of your VIN at checkout so we can ensure you receive the correct part.

Brand

Powerflex

Search terms customers use

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