I have 15/45 on my bike. (bought it used)
My question is how can I tell if this is a 520 conversion or not? I'm using a AFAM rear sprocket part number 11509-45

Thanks for any advice/help

 

This sounds too easy, but would it be as simple as looking up that sprocket and see what it says?

 

I tried looking it up, but could not find the part number

 

well according to this webpage, 11509 denotes a 520 sprocket for a '95 F3
linky

http://www.whitebuffaloracing.com/afam.htm

 

speaking of chain conversions, should I chain sprockets when I replace my chain?

 

Yes. A bad chain will ruin new sprockets and vise - verse.

 

thank you very much, I appreciate the fast response and accurate info

 

Hey Dirty,
Just measure it.

520 means 5 eighths of an inch between the pins and 2 eighths of an inch (i.e. 1/4") between the plates.

525 means 5 eighths of an inch between the pins and 2.5 eighths (5/16") between the plates.

And remember .... you only save 10 ounces by going to a 520.

 

Hey thanks man.
I checked the rear sprocket and it said AFAM with a part number (11509-T45). I checked and it is a 520 sprocket. So I'm assuming I have a 520 countershaft sprocket and 520 chain?