He is not. There's many 130-150lb guys with them. Me too! I loved my 2003 636 I had. Ride one, you'll be surprised that looks can be deceiving. Extremef4i and I switched bikes on a ride before and he was amazed how it handles like you wouldn't think it would. It's not like his 600 I rode, but on the street you can't tell a difference UNLESS you're in a fury of SWITCHBACKS. Tight switchbacks are a P.I.T.A on the bike, but very doable. Him and I don't endorse chicken strips either. It'll handle anything, but tight switchbacks fast. It's a great street bike, not TRACK bike. For the street it's the best in my opinion.