Cr85 Expert part question???

This is a question about the second bike I have.What is the part called that is to the left of the gas tank? On bigger bikes, it's on both sides of the tank. You can see it through the gas tank fender wholes, and on the other side of it it has white shrouds slanted out. The anticool liquid also goes inside it via the top.Also, if the little metal things are bent up and down a lot, does it need to be replaced? What would it cost to replace it? And if it is damaged, what are the effects of it (loss of power, difference in sound, etc.)?Thanks.

the radiator...... as long as it is not leaking and freely flows coolant through it ... it does not need to be replaced... . the bike will not sound different just because the radiator is damaged.. that is until the motor overheats and locks up.....