I know this discussion took place a while ago, but I can't find it. Which Doo belt are most guys using? I need a new one for my 670.

The stock belt is the best. *I think its a gates extream. *

I have found that you will lose speed and accel going to anyother belt.

doo belt #067 is the best for your 670.I wouldn't use a gates belt even if they where free!