Powerflex Black Series Rear Differential Front Mount Insert Bush / Diff Bushing for BMW 4 Series F32 F33 F36 F3x (2013-2020) | Polyurethane 95A Track Race Final Drive Support | Anti Wheel Hop | OE 33316792513 | PFR5-1927BLK

Race-spec rear final drive front mount insert for BMW 4 Series F32 F33 F36 | Powerflex Black Series | PFR5-1927BLK

Chase cleaner launches, sharper shifts and a more connected rear axle feel with this motorsport-grade differential mount insert. The Powerflex Black Series PFR5-1927BLK fits into the voids of the factory rubber at the front of the rear final drive, tightening up driveline movement so more torque reaches the tarmac with less delay.

We run these on our own builds and on many customer cars with outstanding results. Feedback is consistent. Crisper throttle response, reduced wheel hop, stronger traction off corner exits and a more planted rear end on fast road and track days.

Why this upgrade

• Transforms driveline precision by limiting differential wind-up under load
• Improves power delivery for launches, gear changes and corner exit
• Helps curb axle tramp and wheel hop on tuned and standard cars
• Motorsport compound for consistent geometry control session after session
• Fits into the OE rubber bush so there is no press-out of the original mount

Technical details

• Part number: PFR5-1927BLK
• Series: Black Series performance polyurethane
• Hardness: 95 Shore A for maximum location of the driveline
• Location: front mounting point of the rear differential housing
• Kit contents: 2 inserts
• Diagram reference: 27
• Works with OE bush reference: 33316792513

Vehicle fitment

BMW 4 Series F32 Coupe, F33 Convertible, F36 Gran Coupe, model years 2013 to 2020. Designed for the front position of the rear differential mount on the F3x 4 Series platform.

Who is it for

• Track day and club motorsport drivers wanting rock-solid diff control
• Fast-road enthusiasts seeking a tauter rear axle and improved traction
• Cars running sticky tyres, uprated power or aggressive launches

Note: The Black Series compound is focused on performance. Expect a potential increase in noise, vibration and harshness compared with softer materials.

Fitting service

Professional installation available at MJ Modifications in Warwickshire. For a fitting quote, email info@mjmodifications.co.uk.

What you receive

• 2 x Powerflex Black Series front inserts for the rear differential mount
• Installation grease

Search terms customers use

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