Not that I have ever heard of, It may be possible to make a 9T but an 8T for 1/2 X 3/16" chain may not even be possible.
I think we only have the 10T option on the drive, we all do our gearing one of 2 ways...change the rear driven sprocket to either smaller for more speed or larger for more low end power for hills or heavy weights or we install a Sick Bike Parts shift kit on a multispeed bike and then you will have the best of both worlds.
Best wishes for what ever you do f250cobra
Originally Posted by f250cobra
Is it possible to change the drive sprocket? From a 10t to an 8t? Does anyone make these?