KMP BMW F8X Drexler Differential

The KMP Motorsport Bolt-On Differential is a high-performance upgrade designed for motorsport and endurance racing. This complete unit replaces the electronic GHAS differential with a Drexler Limited Slip Differential (LSD) and KMP Motorsport final drive, delivering superior reliability, strength, and performance for high-demand applications.

Mechanical LSD for Endurance Racing

Unlike the servo-operated Active M Differential, the KMP Motorsport Differential features a mechanical plated LSD, offering consistent, predictable performance. With reduced heat generation and enhanced durability, this unit is ideal for continuous, high-endurance racing.

• Racing-Specific Configuration: Ramp angles and preload are precisely tuned for motorsport use.
• Predictable Performance: Provides reliable and consistent grip in all racing conditions.

Optimised Final Drive Ratio (3.91)

The KMP Motorsport Differential utilises an optimised final drive ratio of i=3.91, compared to the stock 3.46 ratio, delivering 13% more wheel torque in all gears. This enhancement improves acceleration and wheel torque, giving drivers a competitive edge on the track.

Advantages Over BMW Motorsport Differentials:

• Replaceable final drive as a wear part for extended service life.
• Longer gear lifespan due to a motorsport-specific tooth profile.
• Serviceable components reduce long-term costs.

Key Features and Benefits of the KMP Motorsport Differential

Replaceable Final Drive

Extend the lifespan of the differential by replacing the final drive instead of the entire unit.

Lightweight Construction

Reduces rotational mass for improved efficiency.

Enhanced Strength

Built with high-quality materials to withstand motorsport demands.

Tailored Ramp Angle and Preload

Configured specifically for racing conditions.

Compatibility and Installation Notes

• Driveshaft Requirements: Requires either two left OEM driveshafts or KMP driveshafts.
• Software Adjustment: The OEM electronic LSD must be disabled in the software prior to installation; assistance is available.
• Material Compatibility: Compatible with steel shafts only; not suitable for carbon driveshafts due to spline differences.
• F87 M2 (Standard): Contact KMP prior to purchase for compatibility verification.
• Oil Requirements: Delivered without oil; recommended use is 75W140 oil (0.9–1.0 litre), such as Motul or Mobil.

Transport, Packaging, and Deposit System

• High-Quality Crate: Shipped in a reusable wooden crate for secure transport.
• Deposit/Exchange Option: KMP offers a deposit system to ensure short lead times. Customers pay a deposit upfront, refundable upon return and inspection of the original differential.

Why Choose the KMP Motorsport Bolt-On Differential?

• Superior durability and performance for high-endurance motorsport.
• Enhanced wheel torque with optimised final drive ratio.
• Serviceable design reduces long-term costs.
• Reliable and consistent performance for racing conditions.

Upgrade Your BMW with KMP Motorsport Precision

The KMP Motorsport Bolt-On Differential offers exceptional reliability, strength, and performance for high-performance BMW models. Tailored for track and endurance racing, this differential redefines drivetrain optimisation.