From 2000 - 2006 BMW Motorrad saw fit to 'upgrade' there simple, reliable, tried and tested ABS design with the ABS/Servo system (Assisted brakes). Similar to the braking system in most cars, vans and lorries. When the brakes are applied a motor assisted pump under the tank applied modulated pressure to the callipers. Ignoring the fact that this was completely unnecessary overkill, it has turned out to be one of if not the most unreliable 'upgrades' BMW have ever installed.

‍

Every unit seems to fail for the same reason, a faulty pressure sensor, which is a non replaceable internal component. When they were available the Servo unit cost upwards of £1500 (+fitting!) but we have been reliably informed they have none left and will not be producing more.

‍

After lots of R&D I have come up with what I believe to be the best method of bypass for this system. The brake lines are simply re-routed, as the callipers and master cylinders are the same on factory non-servo models. The difficult part is the electrical bypass. I can re-wire the bike to stop the Servo unit starting up, keep the speedometer working normally and on can bus models keep the triangle warning light working normally (as opposed to covering it with tape)