A drivetrain for the motorized movement of a motor vehicle closure including at least one friction lock mechanism to provide a friction torque, the friction lock mechanism being part of a coupling mechanism of the drivetrain for coupling two drive components of the drivetrain for conjoint rotation, including a coupling piece on the motor side to a drive component on the motor side and via a coupling piece remote from the motor to a drive component remote from the motor, and including multiple friction lock elements which can be rotated about a drive axis, are situated coaxially to one another and form the friction lock mechanism, a middle one of the friction lock elements being concentric to one another and in frictional engagement with two others of the friction lock elements.

A sliding component including a sidewall including at least one low stiffness projection capable of elastic deformation, and at least one high stiffness projection capable of plastic deformation, where the low stiffness projection includes a radial face at an innermost or outermost surface adapted to contact a neighboring component.