FOR A3 SEAT LEON SKODA OCTAVIA GOLF MK5 PASSAT TOURAN SACHS DUALMASS FLYWHEEL Product Description 1 x Sachs Dualmass Flywheel (SPECIAL OFFER PRICE) The use of advanced and multi-functional components now enables the SACHS dual mass flywheel to be installed also in lower midsize category cars. Problem The engines ignition-induced rotational speed irregularity causes torsional vibration in the vehicles driveline. At a given speed the ignition frequency is equal to the natural frequency of the driveline so that extremely high vibration amplitudes occur that cause transmission rattle and body boom. Solution In the SACHS planetary dual mass flywheel, the planetary gear and the torsional damper are incorporated into the flywheel. For this purpose, the flywheel is divided .