Getting ready to change out my front and rear brake pads (rotors are good) and I have a question. Do you have to replace the front & rear brake pad dampeners or do you re-use the ones on there?

 

I would buy new one. By the time you get the old ones cleaned up. You could have been done with two axels. I used acetone, brake cleaner, and a chem dip. Plus a WHOLE LOT of ELBOW GREASE. I wont make that misstake again.
Everything else you can reuse.
You will need a good thin metal 1" putty knife to release the old ones from the old pads before you can get them out.

 

Buy everything new. its something that sees a lot of weather. Newer parts wil just be easier to remove next time and will last the life of the pads.

Pads, Dampers, Caliper Spring Kit & Sensors. Maybe even the Caliper Bolt