a clutch assembly for disposition in a motor vehicle drive line includes an internal reaction force circuit . the clutch assembly includes a multiple disc friction clutch disposed adjacent an operator assembly which selectively applies force to the friction clutch to selectively transfer torque therethrough . the clutch components are disposed between a flange and a stop on an elongate member which functions as a reaction force member to self - contain the reaction force from the clutch operator . the clutch finds particular application in motor vehicle drive line components such as a rear axle wherein it is disposed in pairs to independently control torque supplied to each axle and in applications where it is advantageous to contain or ground the reaction force generated by and associated with the clutch operator compactly within the clutch structure rather than its housing .