You are the dumb here. You wanted facts, I checked with professional and gave the answer from him. Yet you go mad and personal. Can't face the fact still? What else do you need? That is the part that we are debating here and you out of nowhere go and talk about the arm. Aiseh!

Talking to people like you have to use downgraded to basic English. Else, you would misinterpret and think aftermarket something else. Do you know what is swaybar?

You can go lift the BMW 5-series, Mazda 3/6, Lancer GT rear suspension METAL BAR (try not to use jargon with dumb KIASU like you) then you come and tell me how heavy. You think that Metal BAR so light? The so called lighter Torsion Beam one is not that light neither.

Then can you explain where the 50kg come from? The rims and wheels ain't that much big difference from 16" wheels neither. The spoiler? FYI, FF cars that wanted to improve handling, they would distribute more weight to the rear by adding more metal to the back. OK?