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Evolution of automotive diesel engines has led to the production of smaller and smaller engines with increasingly higher torque. The reduction in external dimensions means smaller flywheels, and the increase of torque rates, higher cyclic irregularities that today''s flywheels even with dual mass techniques are no longer able to cope with. Because of this, "damper" type absorber devices which control torque vibrations due to cyclic irregularities are no longer efficient to decrease rotating vibrations to an acceptable level. The best solution to cope with these problems is a tuned rotating pendulum: P.A.R.I.S. (Pendulum Acyclism Reducer Integrated System). This vibration absorber system can be easily integrated into a standard engine flywheel. P.A.R.I.S. systems show a very high efficiency level.