специально не взвешивал, но "на ощупь" как стоковый
от них писмецо насчет шума:
When you convert a dual-mass flywheel (factory) to single mass (aftermarket aluminum or steel), there is bound to be some noise called "gear lash" noise. In lightweight aluminum flywheels it is more than heavier steel ones, but it cannot replace the quiet dual mass factory system. The dual mass factory system has a "face" that moves and absorbs vibration, whereas the single mass (no moving parts) does not move at all.
Unfortunately, this kind of flywheel does not last forever since the springs and other moving parts can wear out requiring the replacement of the entire flywheel. For high HP cars, they will kill the flywheel faster.
To absorb some of the vibration, a disc with springs (sprung hub) is used to dampen some more vibration. It's not a perfect solution, but it helps.
Changing the fluid to a heavier fluid does also help with the noise, but some transmission (like 6-spd E39 M5, E46 M3, and E36 M3 6-spd) are more noisy than others. Of course, when cold it doesn't sound as bad until it heats up.
Some have also had some programming to raise the idle RPM higher so they cannot hear it.
Given some time, the springs on the disc will work better helping it to be more quiet...but it may never be silent like stock...since it's not designed the same way.
вообще, конечно, смешно - даже на вазе коробка так не бренчит, при том что они с дикими допусками выпускаются и никаких 2хмассовых маховиков там не бывало :-/
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