Millway Motorsport Solid Delrin Rear Diff Bush/Bushing Kit & Differential Mounts for BMW M3 E90 E92 E93 (E9X) & 1M E82 - Rigid Final Drive Bushes, Direct OEM Replacement, Wheel Hop Fix/Axle Tramp Cure, Track/Drift/Street Upgrade Subframe Mounted

Millway Delrin Rear Diff Bush Kit for BMW M3 E90 E92 E93 and BMW 1M E82

Transform rear-end control and drivetrain response with this Millway solid Delrin rear differential bush kit. By replacing the factory rubber bushes with rigid acetal (Delrin) mounts, the final drive is secured to the subframe in the correct geometry, giving cleaner power delivery, sharper throttle pickup and a more planted rear axle on fast road and track.

Looking to cure wheel hop, axle tramp or diff movement on your M car? These hard mounts are a direct-fit solution that locates the differential precisely, eliminating the vagueness and flex you get from tired OEM rubber. Perfect for performance builds, spirited street driving, track days, time attack, drift and drag launches.

Why this upgrade works

• Solid Delrin construction minimises compliance so torque goes to the tarmac with less wind-up and less wheel hop.
• Improves traction, corner exit stability and shift quality by keeping the final drive locked in position under load.
• Tighter rear-end feel and more immediate throttle response for confident, repeatable handling.
• Direct-fit in factory locations - no additional fabrication required for E9X M3 and E82 1M applications.
• Durable, low-deflection material that resists deformation and maintains alignment during hard use.

Compatibility

• BMW M3 E90 saloon rear diff bushes
• BMW M3 E92 coupe rear diff bushes
• BMW M3 E93 convertible rear diff bushes
• BMW 1M E82 rear diff bushes

Real-world results

We run these Millway bushes on our own builds and have fitted them for many customers. Feedback is consistently positive: a more connected rear axle, cleaner launches, less drivetrain slop and a confidence-inspiring feel when pushing on. If you want the rear of your BMW to behave like a proper performance car, this is a proven upgrade.

Note: as with any rigid bush conversion, a modest increase in drivetrain noise and vibration inside the cabin is normal.

Fitting and support

Professional installation recommended. MJ Modifications offers fitting in Warwickshire - request a quote at info@mjmodifications.co.uk.

Sold as a complete kit for one vehicle.

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