The Dr650r 1990 (l) (e2 E4 E15 E16 E17 E18 E21 E22 E24 E25 E34 E39 E Front Caliper consists of fifteen pieces with the Caliper Assembly,front,left being the most expensive.
In this schematic the "Seal,piston" is used most often.
This schematic depicts all components used in the Dr650r 1990 (l) (e2 E4 E15 E16 E17 E18 E21 E22 E24 E25 E34 E39 E Front Caliper partslist.