Found this while looking around the other day:

Its a steel rear sprocket but dosen't weight too much more then a aluminum. Makes sence seeing as theres not much left. Anyone run one or know someone who has? Any issues?

 

not sure about that sprocket. But you may want to check Superprox... http://www.supersproxusa.com/
it has a aluminum center with steel teeth.

 

I believe that is my next kit there. I usually order from sprocketcenter.com and I've talked to them on the phone and I don't think they would sell a customer a weak sprocket. Aside from ebay specials I think most sprocket manufacturers are just fine.

 

AFAM makes great sprockets. You will see their logos on MotoGP bikes all the time. However, they don't look anything like your picture. They usually look like this:

 

I believe the sprocket you are showing there is a: "Drive SystemsUSA Superlite 520 steel rear sprocket"

Source: http://www.sprocketcenter.com/p/6009...onda-cbr-.html