what is the most quiet dirt bike out?

Dual sport bikes have to comply with noise regulations so they are quiet and still fun in the dirt as long as you look for fun not for racing. A good example copuld be the KLX 250.
 
To put a muffler on a dirt bike is like strangling your neck with a rope.

There is no such thing as a quiet dirt bike. Not even close to quiet, I add.
 
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