Hello @ics, Can anybody inform me of a simple way to find out whether my RD04 has 50 hp OR 60 hp? My mechanic thinks that it might be a 50 hp because the exhaust pipe (original) is rather narrow. On the other hand though the bike is imported (all markings are in japanese) and I always thought that these bikes come with 60 hp. Any clues????? Panos @#74 RD04