Topic: Sprocket Options

[GurgleMurgle]

I would like to change from a 17T to a 16T drive sprocket on my CB750F0. I have had a bad experience with inexpensive sprockets on another bike, and would like to stick with an OEM part or a high quality equivalent.  I like DID X-ring chains and Sunstar sprockets when I can get them, not cheap but they last.  Sunstar doesn’t list a 16T for my model but they do have one for a CB650. Can anyone comment if the splines match?

[bryanj]

Honda went away from the 16 tooth on the front, probably better to change rear wheel one

[madmtnmotors]

The smaller the front sprocket the greater strain on the chain having to turn/wrap such a tighter circle. Better to increase the rear than reduce the front as bryanj indicated.

[HondaMan]

Honda started the 750 with the 16T/45T sprockets. One of the 3 major problems with the chains (this bike was dubbed "the original chain breaker" in 1969) was the small OD of the 16T front sprocket, which flung the oil away from the chain at hiway speeds above 50 MPH. While there were additional factors (I've outlined all of them in these forums, and in my book) that finally solved the chain-breaking and case-destroying results, the first thing Honda did was to send out free 17T countersprockets to all CB750K0 owners (via the shops, and recalls), to slow down the destruction.