Join Date: Aug 2017
Location: Livermore CA
Thanked 3 Times in 3 Posts
Help! Anyone find a 16T Countershaft sprocket?
After mixed results in my last 2 fuel economy competition I am in need of taller gearing for my CBR250r. I won my first competition ( 135 mpg) but finished 3rd in my last one ( 133mpg). I'm currently running 15T/36T gearing. I've checked conventional sources and found that a 15T is the largest available. The CBR has plenty of torque to go taller but the sprocket selections are limited ( 15T front , 36T rear . Have any of you found a 16T sprocket that matches the splines of the CBR250r ? I don't mind doing some grinding to get the necessary clearance. Any help is appreciated.
Hypermiling to a better tomorrow