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2009 fatbob clunking noise/feeling

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Old Aug 19, 2025 | 06:49 PM
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Default 2009 fatbob clunking noise/feeling

Every since INDOT did some construction on the road i took to work and eventually ground the road down without any warning to anybody, I now getting a clunk noise when I go over bumps and potholes after hitting that transition from ground pavement back to normal pavement.

Originally i was suspecting the jarring uneven pavement finally did my(presumably original) engine mounts in, my coworker thinks my suspensions needs rebuilt/replaced.

thoughts? Anything to look into?
 
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Old Aug 19, 2025 | 08:05 PM
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The most likely suspects would be the engine mounts and gas tank. Inspect the mounts, they've probably on there for a long time. Put a socket on the tank bolts and make sure they're tight.
 

Last edited by nevil; Aug 19, 2025 at 08:09 PM.
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Old Aug 19, 2025 | 09:10 PM
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Is the noise in the front, back, or in between? Can you feel it? Where?
 
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Old Aug 19, 2025 | 09:37 PM
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Originally Posted by John CC
Is the noise in the front, back, or in between? Can you feel it? Where?
Sounds like it coming from somewhere under the gas tank or the forks, not 100% sure...I'll have to try and pay better attention tomorrow
 
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Old Aug 19, 2025 | 09:38 PM
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Bike has around 25k miles on it by the way
 
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Old Aug 20, 2025 | 06:36 AM
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Gas tank bolts. Shocks making contact with the belt guard. Just a couple things to check.
 
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Old Aug 20, 2025 | 06:39 AM
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+1 on the tank bolts.
 
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Old Aug 20, 2025 | 08:26 AM
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I didnt have much time this morning but j tightened the forward gas tank bolt, so far, I haven't heard any clunking....yet...

Definitely still want to change the motor mounts at some point.... kenetic in the back, maybe oem in the front?
 
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Old Aug 21, 2025 | 09:30 PM
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Check your steering head bearing first. A worn bearing is a common cause of that clunk over bumps. Also inspect your swingarm pivot bearings and shock mounts.
 
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Old Aug 21, 2025 | 09:33 PM
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...clunk haven't shown back up yet...maybe need to go hit a few more bumps to be sure...
 
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