I just bought a 2000 YZ125 today and I LOVE IT!!!! I sold my old 99 CR125 and bought a the best YZ i could find. I got a hella deal on it too, paid only $3000 and everything is stock too, the owner has only riden it 3 or 4 times before he started a new job. Let me tell you, this YZ is in a class of its own, it beats out my tired CR125 hands down, it revs further and pulls faster unlike my doggy CR. Now, I want to either add a FMF Rev Pipe to it with PowerCoreII Silencer (not a shorty) OR a Pro-Circuit Works Pipe with PC 304 silencer. When I first had my CR it had a PC Platinum pipe w/PC 304 silencer. Kinda liked it actually. Im just curious to see what all you other YZ riders have on your bikes and what works the best! Thanks! PS- It's gonna be ported by Eric Gorr over the winter months!