I have the TTR250 with the factory GYTR muffler.. I didn't mind the noise till I bought my son the same bike, however his has the White Brothers E-Series muffler. This is so much quieter.
My question is, can the GYTR be made quieter. I use the bike to help muster sheep out Cobar, NSW.
Or recommend another brand, I could then keep the GYTR stock and swap over when I go to Cobar