I replaced all suspension components, including inner and outer tie rods, sway bar bushings, and Feal 441 shocks. The ride height is 25" all around. The ride is very taunt, and the steering is responsive. My question is, what should I do with the old components? Do you have any suggestions?

 

Toss them

 

Nice suspension choices. 996 parts are rare in Australia, rare to even see a legal part out. So I leave my left overs with my Independent service. For those who sanely spend less than me. The arms could be poly bushed by someone who wanted them. They also fit Boxters I think. Your local situation might be very different and off for metal recycling.

 

Recycle it is.

 

When owners (or myself) don't want the old struts when I install coilovers, I offer them up for free on Facebook marketplace.
There's always someone who wants them.
For control arms, I've always tossed them into my scrap metal pile along with used rotors, AC compressors, condensers, radiators, etc and someone comes and picks up the scrap from me eventually.