Powerflex Black Series PFR5-1921BLK Rear Subframe/Cradle Mount Polyurethane Bush Inserts for BMW 2 Series F22 F23 (Coupe/Convertible 2014-2021) - Rear Axle Carrier Void Filler Bushings | Track/Fast Road Upgrade - Replaces OE 33316792510

Powerflex Black Series PFR5-1921BLK Rear Cradle Mount Insert Set - BMW 2 Series F22 F23

Transform the way your BMW 2 Series drives with this uprated rear cradle insert kit. The Powerflex Black compound targets unwanted movement in the back axle assembly, tightening the chassis and delivering razor-sharp response for circuit work and fast-road use. By limiting compliance at the rear-most sub-frame mounts, the car tracks straighter under load, puts power down harder, and feels more precise the moment you turn the wheel.

Part number: PFR5-1921BLK  |  Diagram reference: 21

What makes it a serious upgrade

• Black Series polyurethane at 95 Shore A for maximum control of geometry under braking, cornering and acceleration
• Stiffens the rear cradle to reduce deflection, helping turn-in, traction and high-speed stability
• Poly material resists oil, heat and road grime far better than ageing rubber mounts
• Ideal for track days, time attack, sprint and hillclimb, yet excellent for aggressive B-road setups
• Direct insert design to occupy voids in the factory bush housing for a secure, repeatable alignment

How it feels on the road and track

• More planted rear end with cleaner, more consistent feedback
• Reduced wheel hop on launches and improved power delivery out of bends
• Crisper steering response and confidence over kerbs and mid-corner bumps

Fitment and details

• Vehicle compatibility: BMW 2 Series F22 and F23
• Location: rear-most sub-frame bush positions on the rear axle carrier
• Pack contents: 2 inserts
• Replaces OE reference: 33316792510
• Application: performance-focused setup for track and enthusiastic fast-road driving

Proven by us and our customers

We run these on our own builds and customer cars. Feedback is consistently positive: tighter rear-end control, better traction and a noticeable uplift in precision without the hassle of full solid mounts.

Installation and support

Professional fitting recommended. For expert installation, contact MJ Modifications in Warwickshire for a quote: info@mjmodifications.co.uk.

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