i installed this on my 2009 KLX250SF to get more torque on low gears for driving dual sport.
it fits perfect and seems to be of a good quality. the price was just right.
Just put this on my 2020 KLX250S. Very well worth changing the stock sprocket out for this one. One of the cheapest upgrades you can do, and you can still use the stock chain if not changing the rear sprocket. Great bang for the buck.