the vin number is incomplete- RJ15A is a partial of the complete vin number (17) digits long-would start with JS1-RJ15A is 1989 thru 1993
Sounds like an engine number. A vin is a 17 digit number you will find on your head tube.
Hi, RJ15A tells you that the bike was build in between 1989 and 1995. Regards Kicking-Wolf
2001 Look for yourself here: http://www.suzukicycles.org/_misc/identification.shtml