taco eater :
D-Dub from Brooklyn, NY United States
My stock belt was stretched like Brittany Spears... Now I'm feelin more like a virgin. No crank issues here, maybe I got a good one?
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Crank!
April 17, 2012
taco eater :
ROBEARTO WONDAREZ from Your Face
I like crank. My Derbi likes TJT belts.
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stick with stock
May 4, 2010
taco eater :
cuperteenbro from Cupertino, CA United States
These belts are hit or miss. All are a bit different with the inner teeth, and seem to be of slightly different length (mm's). We had one that maybe bent two derbi piston port cranks. This is speculation, but both bikes were great, then we put on the belt and both of us had bent cranks. just a word of warning. If your stock belt isn't terribly cracked or stretched you may want to keep running that. Maybe get one of these as a spare and keep it with you for longer rides in case stock breaks.
Wondrous! 
stick with stock