Ok i am just now replacing my chain n sprokets and well my manual says it is 14 by 51 if i remeber correctly (oh ya and my rear sproket was a sunstar??? with 49 teeth, is that stock???)... i was at the local shop n we went to order them and in the book sunstar said like 14-50 and renthall sayed somthing different also??? so im just gonna go with what the manuall says with 14-51??? anyone else have this problem..