what are these

[dan&tamspatrol]

i have 1998 gu and have 2 of these 1 on each of the rear control arms and not sure what they are or what they are for

[growler2058]

Someone asked this recently i think just cant remember the response, was something like balancing or harmonics i think

[dan&tamspatrol]

oh ok thanks mate

[BearGUST]

They're dampers. Specific weights absorb specific frequency vibrations etc.
They can be used on suspension, driveline, exhaust or anything that vibrates.