Yamaha MT09 / Tracer TRGT / XSR900 Forks
As much as you read forums saying that the stock fork and shock is junk, its not really true. It's still KYB, so it's not junk. The settings from the factory are trying to cover a lot of bases, so it doesn't do any one thing well.
The fork only has one cartridge doing all the work so while it's a little odd compared with its competitors, we have got some good dyno and road testing results from revalving.
If you want more performance and more adjustability, the Andreani Cartridge kit is a great upgrade.