Blackline limited slip differential - Ford Focus ST170 - MINI Cooper S - Getrag 6-speed transmission

The Blackline limited slip differential for the Ford Focus ST170 and MINI Cooper S with a 6-speed Getrag transmission, also known as an LSD (limited slip differential), improves traction by distributing torque between the two-wheel drive drive wheels based on available grip.

Its helical gear design allows the limited slip differential to transmit more torque to the wheel with the best traction. As torque increases, the gears press against the differential housing and generate the internal friction necessary for this torque distribution. The system can thus handle a significant difference in drive force between the two wheels, particularly during heavy acceleration out of a turn or when traction is limited.

Under light loads, the helical limited slip differential maintains smooth, progressive, and quiet operation. The wheels can continue to rotate at different speeds when necessary, particularly when cornering. This feature enhances traction during spirited driving while maintaining handling suitable for on-road use.

The Blackline limited slip differential uses a parallel-axis helical gear architecture optimized to distribute forces. Its 5:1 torque split means that when one wheel loses traction, the wheel with the most traction can receive up to five times the torque transmitted to the spinning wheel.

As with any helical-gear limited slip differential, a minimum amount of resistance must remain on the wheel with the least traction to allow torque transfer. It is therefore most effective when both wheels remain in contact with the ground. This technology also works particularly well in conjunction with modern ABS systems.

The Blackline HLF015 limited slip differential is designed for Ford Focus and MINI Cooper models compatible with a 6-speed Getrag transmission. Its housing and gears are made of high-strength 8620 steel, and it is mounted as a direct replacement for the stock differential.

Technical Specifications of the Blackline Limited Slip Differential for Ford Focus and MINI Cooper with Getrag Transmission

Manufacturer Part Number: HLF015
Quaife application code: QDF38Z
Type: Helical-gear limited slip differential
Ford Focus compatibility:
- Ford Focus 2.0L (2002) - Getrag mechanical transmission
- Ford Focus 2.0L (2003) - Getrag transmission
- Ford Focus 2.0L (2004) - 6-speed mechanical transmission
MINI Cooper compatibility:
- MINI Cooper (2005) - 6-speed mechanical transmission
- MINI Cooper (2007) - N14B16A or W11B16A engine - mechanical transmission
- MINI Cooper (2008) - N14B16A or W11B16A engine - mechanical transmission
- MINI Cooper (2009) - N14B16 or W11B16 engine - turbocharged petrol engine - mechanical transmission
- MINI Cooper (2009) - W11B16A petrol engine
- MINI Cooper (2010) - N14B16A petrol engine - mechanical transmission
Transmission type: 6-speed Getrag gearbox ratio
Torque split ratio: 5:1
Housing and gear material: High-resistance 8620 steel
Mounting: Direct replacement for the original differential

Key features of the Blackline limited slip differential for the Ford Focus and MINI Cooper with Getrag transmission

• Torque split between the wheels based on available traction.
• Delivers more torque to the wheel with the best traction.
• Immediate and progressive reaction to changes in traction.
• Smooth, progressive, and quiet operation.
• No friction discs for reduced maintenance requirements.
• Power delivery that is easily controllable, especially during spirited driving and drifting.
• Housing and gears made of high-resistance 8620 steel.
• Direct mounting for the original differential.