125-200cc Are 2013 wr125 stock silencer rebuildable

So my stock 2013 wr125 silencer on my wr165 is starting to sound burned out my question is it rebuildable or is it just better to buy a new aftermarket one. On my bike the silencer get banged up a lot since it is my off road bike so I do not want to buy new one to look good, just want what works. Thanks for any help. Spark arrester is not important but if buying new would buy one with a spark arrester.

Yeah mate they're rebuildable. Remove the scews from around the end cap (outlet) and pull the cap out. It can be a bit tight but with persistence and working it back and forth you'll get it. The core stays in the main body.
Enjoy.