My 1996 Super Glide makes an odd sound when running over bumps and dips. Sunken manhole covers can really bring it out. It sounds like a barking seal, making an “ARF” sound, sharp and quick. I’ve feel checked the wheel bearing temperature, not even warm. Pulled the fork springs and looked down the tubes. Changed the fork oil. Pulled the swing arm, checked and repacked the bearings, it was due anyway. I’m not find the source. The sound seems to be on the rebound from a heavy bump but I could be wrong about that. Could fork seals make this noise? Maybe the windshield is rubbing on something but I haven't seen evidence yet.
I think I’m going to name the bike Sparky if I don’t find this noise.

 

Shocks squeaking? The fox shocks that were on my bike that I replaced with FXDS shocks would squeak on bumps.

 

Thanks, that's a good idea to check. Think I'll wrap a towel around one and go find some bumps. The left one's pre-load adjuster is gritty feeling so I'll
start there.
It's weird that I can bounce all over it in the garage and not replicate the noise.

 

My 90 FLT made the same kind of noise and i found the muffler mounts to be chirping .
Check your muffler and bag mounts for metel to metel chirping.

 

I had this type of noise and it was the gas tank having movement.

 

Over time the bushings Can wear out causing bolt tho mount (metal to metal) one of my front lower bolts actually sheared off.