Not dumb. The aluminum arm is slightly lighter (~1.5 lbs)- less unsprung weight, but the main advantage is it's much stiffer. The front arm (transverse link) is just like a big bushing- the aluminum one deflects much less.Originally posted by Midwestrider
Ok dumb question here.. what is benfit to doing this.. stronger part?
Also what year GC8 did you source these from and the cost of them?
These arm can only be found off of the JDM GC8's- WRX's and STi's. I see takeoffs (used) for ~ $400 for everything, brand new is close to $800.
They are kind of hard to find (as you can imagine), but some of the bigger car importers- Gr8wheels, East Coast Scooby, others get them fairly regularly.