The Blackline limited slip differential for MINI F54, F55, and F56 models with a 6-speed Getrag mechanical 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 thus allows for better utilization of available traction, particularly during hard acceleration and when exiting corners.
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-shaft helical gear architecture optimized to distribute forces. Its 5:1 torque split means that when one of the wheels 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 grip to allow torque transfer. It is therefore most effective when both wheels maintain a minimum level of resistance. This technology also works particularly well in conjunction with modern ABS systems.
The Blackline HLF019 limited slip differential is designed for third-generation MINI models F54, F55, and F56 equipped with the compatible Getrag 6-speed mechanical transmission, including certain Cooper S and Cooper SD versions. This part is not intended for JCW versions. The transmission type and vehicle model must be verified before ordering. Its housing and gears are made of high-resistance 8620 steel.
Manufacturer Part Number: HLF019
Quaife application match: QDF22N
Type: Helical-gear limited slip differential
Vehicle compatibility: MINI F54 Clubman (depending on version)
Vehicle compatibility: MINI F55 Cooper S and Cooper SD, depending on version
Vehicle compatibility: MINI F56 Cooper S and Cooper SD, depending on version
Transmission type: Getrag 6-speed mechanical transmission
Restriction: Not compatible with MINI JCW models
Torque split ratio: 5:1
Housing and gear material: High-resistance 8620 steel
Mounting: Direct replacement for the original differential on compatible models
