Where is the best place to get a 39 tooth rear sprocket and how much. Does allumminum last?

 

i got mine from superbike shop. they are aluminium, very light. i think i paid like 46 or so . tell you the truth, i haven't put it on yet. you still can use the stock chain. this is the largest back sprocket you can use with the stock counter sprocket

 

You can get a hi tool steel one from sidewinder for around 40 bucks. I personally prefer them to the aluminum ones. I did not get very good mileage out of the aluminum one I got from Sprocket Specialists. Others have had good luck though, just not me.

Scott

 

i am just going to put a 13T on the front.. its alot cheaper.