Idk what's wrong with the LTR's you guys are racing, but my 07' easily walks my buddy's piped and jetted YFZ and my bro's KFX.  All I've done is remove the airbox lid and pea-shooter, and add a bomb.  I'm running 20" rears with the stock gearing too, so I imagine I'd beat em even worse if I dropped a tooth on the front sprocket.