Details

I installed the 13T (-1 tooth) counter shaft sprocket to see how it worked. I then took a little ride to see how it did.

Sunstar 10913 13-Teeth 420 Chain Size Front Countershaft Sprocket – http://amzn.to/2amDMSj

Sunstar 10915 15-Teeth 420 Chain Size Front Countershaft Sprocket – http://amzn.to/2avNurw

Z125 Performance Mods:
Yosh exhaust – #yoshimura
Chimera Intake – #steadygarage
13T Sprocket – #mnnthbx

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