Compression ? for Top End

[Magic Pickle]

Hey ya'll. My 02 yz250 seems have less power lately. Someone suggested I do a compression test to determine if I may need a top end job and/or replace reeds. Anyway was wonder what psi the bike should register when kicked and or any other advise. Thanks

pickle
dangerous when armed with a wrench.

 

[Joepro9]

hoe many hours are on the bike> Isnt it like 170+ is still good? I know I heard alot of numbers thrown around, but some here knows. I also know that compression is not the only way to tell if it needs replace. Hour of use, loss of power, piston rings condition etc,.