I got a kx125 and it bogs right before the power band I took off the pipe and the power valves cover is missing and there isn’t a connection between the actuator rode and the power valve. Rod in wonder what I’m missing on my bike
You are missing a lot there (including a good cleaning!). It bogs because the PV isn't opening at all. Invest in a shop manual but here is a link to the OEM parts (it doesn't show the linkage that you will need too). OEM Parts for Motorcycles, Dirt Bikes, ATVs, and UTVs | Rocky Mountain ATV/MC You may have to make an account with them but you will need to order parts anyway.