![Single Mass Flywheel & Clutch Conversion Kit for BMW E46 323i/325i/328i/330i, E39 525i/528i/530i, Z3 2.3/2.5/2.8/3.0 Single Mass Flywheel & Clutch Conversion Kit for BMW E46 323i/325i/328i/330i, E39 525i/528i/530i, Z3 2.3/2.5/2.8/3.0](http://www.bimmerworld.com/BMW-52401220-SF-Valeo-Flywheel-Conversion-Kit-1.jpg)
Single Mass Flywheel & Clutch Conversion Kit for BMW E46 323i/325i/328i/330i, E39 525i/528i/530i, Z3 2.3/2.5/2.8/3.0
ONLY for Mechanical Engineers - The dual mass flywheel, or DMF, eliminates excessive transmission gear rattle, reduces gear change/shift effort, and increases fuel economy. There are two basic types of Dual Mass
![Dual-mass flywheels versus solid and dual-mass flywheel conversions | Automotive Powertrain Technology International Dual-mass flywheels versus solid and dual-mass flywheel conversions | Automotive Powertrain Technology International](https://www.automotivepowertraintechnologyinternational.com/wp-content/uploads/2018/10/Video-image_web.jpg)