For all common brake and clutch systems which in the original version require DOT 3, DOT 4 or DOT 5.1. DOT 5.1 has a considerably higher wet boiling point than DOT 3 and DOT 4 and lower tendency to fade. As it is glycol-based it may on no account be used with Harley Davidson and older Buell systems (DOT 5). Hydraulic Magura clutches (e.g. KTM) also require special fluid.