How many KM those litle engine can last stock?
I would like to have one to do everything. Commute. Going to work. Trail riding on week end etc...
I got a KLX250s in the past and i didn't have any problem

 

A 300 shouldn't be a problem either.
It should be just as durable and reliable as a 250 because they are essentially the same engine. I use my 300 every day for utility transportation in my work, and expect it will last for many years.



My last work bike was a DRZ400 that I used for 35,000 miles and 11 years. It was still in excellent condition when I sold it.