I'll say normal for the stryker....I personally don't know why we get so much chatter...raider doesen't...warrior doesen't...lots of vtwins with belts don't. I do agree with what everyone is saying..its most certainly when your in the wrong gear for the speed. While on this topic I don't know why yamaha didn't address this, all writeups talk about it...and since I know firsthand they can build a bike without it..just wonder why they didn't. things that make me go hmm