KMP Differential Bushing & Bracket Set BMW F8X M2/M3/M4

Product Description

The KMP Differential Bushing & Bracket Kit for the BMW F8X M2, M3 and M4 is a motorsport-driven solution designed to improve drivetrain alignment, reduce deflection and enhance reliability — particularly on lowered vehicles.

By introducing a second rear differential mounting point and raising the differential via offset front bushings, this kit significantly improves axle and driveshaft alignment. This is especially important on lowered cars, where poor geometry can lead to increased stress on CV joints and premature failure. The result is improved drivetrain efficiency, reduced strain on components and increased long-term reliability under hard use.

The kit is available in three variants to suit different use cases. The Solid version is aimed at track and motorsport builds requiring maximum stiffness and zero deflection. The Solid with Sliding Bushes version offers controlled compliance in one axis while maintaining rigidity. The Street version uses a hybrid polyurethane solution, delivering improved performance over OEM rubber while retaining acceptable levels of NVH for fast road and dual-purpose cars.

Designed with a strong focus on performance and durability, this kit is ideal for drivers looking to extract maximum performance from their F8X platform, whether on track or aggressive road use.

Further information below.

Key Features

Adds a second rear differential mounting point for improved load distribution

Offset front bushings raise the differential to improve driveshaft alignment

Helps prevent premature CV joint failure, especially on lowered cars

Improves drivetrain stability and power delivery under load

Available in three variants: Solid, Solid with Sliding Bushes, and Street

Solid variants utilise aluminium / delrin construction for near-zero deflection

Street version uses performance polyurethane for improved compliance

Reduces unwanted differential movement compared to OEM rubber mounts

Includes new rear bracket with dual upper mount design

Designed for track, motorsport and high-performance road applications

Vehicle Compatibility

Designed for the following BMW models:

BMW F87 M2 Competition
BMW F80 M3
BMW F82 M4
BMW F83 M4

What's Included

Front differential bushings (offset design)
Rear subframe / differential bushings
Rear differential bracket with dual mount design
Installation hardware including upper hex bolts

Note:

Front bushing bracket is not included
Bushings must be pressed into the existing bracket
Minor grinding of the casting may be required for clearance

FAQs

What problem does this kit solve?
It improves driveshaft and axle alignment, reducing stress on CV joints — a common issue on lowered F8X cars.

Which version should I choose?
Solid: Maximum performance for track and race cars
Sliding Bush: Performance with slight compliance
Street: Best balance for fast road and occasional track use

Will this increase NVH?
Yes, particularly with the solid versions. The street version offers reduced NVH compared to solid setups.

Is installation straightforward?
Installation is relatively straightforward but requires pressing bushings and minor modification to the original bracket. Professional installation is recommended.

Do I need this on a standard ride height car?
It’s most beneficial on lowered vehicles, but still improves drivetrain stability on standard cars used hard.

Shipping & Delivery

Dispatch Times

Most stocked items dispatch within 1–2 business days. Some products may have longer lead times due to special ordering, availability, or build times. If your order contains multiple items, they may be shipped together once all items are ready unless otherwise agreed.

UK & International Shipping

We ship worldwide. Transit times vary depending on destination and courier. Tracking details are provided once your order is dispatched.

Import Duties & International Orders

International customers are responsible for all import duties, taxes, and clearance fees. These are not included in our prices and are outside of our control. Refusal or non-payment of import charges may result in return shipping, handling fees, and customs charges being deducted from any refund.

Damaged Shipments

If your parcel arrives visibly damaged, please refuse delivery or note the damage with the courier. If damage is discovered after opening, contact us immediately with photos. Do not install damaged items, as installation voids courier claims and return eligibility.

Returns

Returns must be authorised before sending anything back. Returns must be requested within 14 days of delivery and returned within 14 days of approval, in unused/uninstalled condition and in original packaging. Some items, including special-order, built-to-order, used, installed, or modified parts, are non-returnable.

Full details are available in our Shipping Policy and Returns & Refund Policy.

Warranty & Disclaimer

Warranty

Most products include a manufacturer’s warranty covering manufacturing defects only. Warranties do not cover wear and tear, improper installation, misuse or neglect, track use, competition or racing environments, labour costs, vehicle damage, downtime, or consequential loss. Warranty outcomes are determined by the manufacturer, not Clubsport Garage. Items must be returned for inspection at the customer’s cost unless agreed otherwise.

Fitment & Installation

Many products are aftermarket components and may require professional installation or minor adjustment. Perfect OEM-level fitment cannot be guaranteed. Professional installation by an experienced workshop is strongly recommended. Installed or used items cannot be returned.

Motorsport Use Disclaimer

Some products are intended for off-road, track, or motorsport use only and may not be legal for road use, for example non-TÜV/DOT-approved parts. It is the customer’s responsibility to ensure compliance with local laws, insurance requirements, and vehicle regulations. By purchasing and installing aftermarket parts, you accept all responsibility for ensuring compatibility, legal compliance, proper installation, and any resulting wear, damage, or failure.

Product Images & Descriptions

Product photos are illustrative and may differ slightly from the item supplied. If specific details are important, please contact us before purchasing.

Full details are available in our Terms of Service and related policy pages.