Bike makes a vibrating/clanking sound under high load

ok, first of all, its not the engine directly, but when im in 4th or 5th gear cruising on the street and get on it a little i get a metall rattling sound.

It will not do it at a slow speed, and i went through the bike and couldent find ANYTHING that would cause it? anyone have similar issues?

Educated guess -

Chain slap, the bikes are notorious for it... some guys minimize it with foam or silicone between the swingarm and chain slide and some guys, like me, just live with it....

They'll ping bad with lower octane fuel too, especially under load...

Chain slap on mine also. I had the chain slide epoxied down, it nearly elimenated the noise. It just came loose and is doing it again. Very annoying! The glue lasted all summer though.

+1 for chain slap mine does it, can anyone tell me where it slaps is it the sproket gaurd or on the sub frame

It slaps on the swingarm. My chain slide is silliconed onto the swingarm and I have no chain slap noise at all.

It slaps on the swingarm. My chain slide is silliconed onto the swingarm and I have no chain slap noise at all.

+1 :lol:

I used the typical weather stripping you can get at Home Depot. Easy to replace if needed.

They'll ping bad with lower octane fuel too, especially under load...

never had this problem with my 06 on cheap 85 octane when dual sporting or when down in mexico when getting gas out of a barrel:ride:

Thanks guys....yeah it isnt engine pinging...

Thanks for the pointer....as I think back, it seemed to get worse as the chain stretched...This is exactly what I needed because for the life of me i could not find where the sound was coming from.... ill go stick it down with something.....

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