My BMW has linked, antilock, abs, and believe it or not, power brakes. But you can still use rear brake, and it shifts the bias toward the rear brake, I'm not sure if it's partially or fully. They only did it a few years, and only on the K1200GT. It was way overkill, power assist on a motorcycle, second generation 2006 on, they dropped that. Guzzi Dan calls it the spaceship, its almost 20 years old, way ahead of its time, he flew out to Arkansas and rode it back for me, I was busy at work.