18 FLHX exhaust rattle
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Road Master
Joined: Apr 2018
Posts: 1,172
Likes: 709
From: Indianapolis
18 FLHX exhaust rattle
Only hear on the left and at idle, and just generally annoying. I've pulled the heatshield and I inspected the muffler. I think it's the clamp for the crossover pipe. I had everything assembled and was hitting the system with my palm and it sounded forward. The clamp is the next part in the system. I pulled the clamp and tried to stuff in some leftover exhaust wrap. Wasn't room for that.
Has anyone had a rattle on this clamp?
Has anyone had a rattle on this clamp?
Seasoned HDF Member
Joined: Jan 2008
Posts: 13,621
Likes: 11,354
From: State of Confusion
Only hear on the left and at idle, and just generally annoying. I've pulled the heatshield and I inspected the muffler. I think it's the clamp for the crossover pipe. I had everything assembled and was hitting the system with my palm and it sounded forward. The clamp is the next part in the system. I pulled the clamp and tried to stuff in some leftover exhaust wrap. Wasn't room for that.
Has anyone had a rattle on this clamp?
Has anyone had a rattle on this clamp?
Seasoned HDF Member
Joined: Sep 2020
Posts: 8,134
Likes: 9,532
From: central NC
Not sure if youve had them off, but those clamps can stretch if youve ever had them on and off. Ive reused mine before when changing exhaust systems but the service manual says to replace them once removed to re-install, which I did the second time I had my system apart. Five bucks a clamp. The crossover pipe and left slip-on clamp are smaller than the right slip-on clamp.
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Road Master
Joined: Apr 2018
Posts: 1,172
Likes: 709
From: Indianapolis
First I've heard of this as a common issue. It's a 2018, so I don't know if that equates to first gen. How did you solve it?
Seasoned HDF Member
Joined: Jan 2008
Posts: 13,621
Likes: 11,354
From: State of Confusion
dont know what FLHX is but on touring models the early canons had QC probs, after my 3rd set under warranty I have given up on them, same as.a buddy and many others confirming loose rattling baffles
Road Master
Joined: Feb 2019
Posts: 831
Likes: 217
From: The Shit Show
FLHX is a Street Glide standard.
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Road Master
Joined: Apr 2018
Posts: 1,172
Likes: 709
From: Indianapolis
I did take the muffler off, and I tapped it with a plastic hammer. No rattle with the muffler.
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Tourer
Joined: Feb 2018
Posts: 357
Likes: 205
From: Eastern Washington USA
Check the chrome parts in the rear where they cross under the bottom rear edge of the fender, my 2018 Road King rattled left rear it was the fender rattling against the chrome bracket, stuffed a chunk of rubber vacuum line between to stop it. Also the rear muffler hanger can rattle or squeak in the rubber support.
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Cruiser
Joined: Feb 2017
Posts: 205
Likes: 58
From: Washington, IL
I have a 17 Limited 107 and had a rattle like that. I replaced the crossover clamp (attached/hanging to the tranny oil pan I think) and that solved it. It was over 50,000 miles (maybe even 60) at the time but don't recall exactly. I could see where it had been chaffing against the exhaust because of it being loose but wasn't enough wear to worry about it.
Stage III
Joined: Apr 2022
Posts: 3
Likes: 1
From: WA
I had the same issue on mine. Wound up being a cracked weld where the pipe t's off to go through the cross over and out the other side. It was a small crack but enough to let the exhaust wobble around and bang.