These calipers feature six pistons with three different piston diameters and more braking power than the 4 piston version. The differential bore size compensates for uneven pad wear. Also the pads wear longer because of their extra thickness. It also has integrated mounting ears which directly bolt (= DBO) to 1984–up front ends with 11.5” or 13” brake discs. Exception: models with narrow fork and wire wheel. This application is not covered by TÜV approval either for technical reasons.