KMP BMW F8X Drexler Differential
Product Description
The KMP Motorsport Bolt-On Differential is a complete high-performance differential upgrade developed for BMW motorsport and endurance racing applications. Designed to replace the electronic GHAS differential, this unit combines a Drexler mechanical plated LSD with a KMP Motorsport final drive to deliver greater consistency, durability and drivetrain performance under sustained race conditions.
Unlike the factory servo-operated Active M Differential, the KMP differential uses a mechanical plated LSD with motorsport-specific ramp angles and preload. This provides more predictable locking behaviour, reduced heat generation and dependable performance during continuous high-load use, making it especially well suited to endurance racing and serious track applications.
The differential features an optimised 3.91 final drive ratio, compared with the stock 3.46 ratio. This provides approximately 13% more wheel torque in all gears, improving acceleration and giving the car a sharper, more responsive feel on circuit.
A key advantage of the KMP design is its serviceability. The final drive is replaceable as a wear part, helping extend the service life of the unit, while the motorsport-specific tooth profile supports longer gear lifespan under racing conditions. This makes the differential a more cost-effective long-term solution for demanding motorsport use.
Installation requires either two left OEM driveshafts or KMP driveshafts. The OEM electronic LSD must also be disabled in the software before installation, and assistance is available. The unit is compatible with steel shafts only and is not suitable for carbon driveshafts due to spline differences. For F87 M2 Standard applications, KMP should be contacted prior to purchase to verify compatibility.
The differential is delivered without oil. Recommended oil is 75W140, with approximately 0.9–1.0 litre required. It is shipped in a reusable wooden crate, with a deposit/exchange option available through KMP to help support shorter lead times.
Please note: this is a non-returnable part.
Further information below.
Key Features
Vehicle Compatibility
What's Included
FAQs
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.
