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I'm using the same protaper adapters. They mount into the lower bar mounts which already have rubber mounting. No vibration issues. I'd recommend real handguards which will also help add mass and reduce vibes. Honestly my bike has next to no felt vibration in the grips. I have protaper atv high bend bars. Keep in mind the adapters will give you about 5/8" of extra rise just in material.

 

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I thread the bar ends and use aluminum inserts to attach the guards. One could reuse the oem bar weights outside of your guards if you want. They'd be destroyed in a tip over though.

 

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I'm not sure how those mounts will work with the rubber bar mounts already installed from the factory. They may be fine? Never tried it so you're in virgin territory. You may need longer bolts? Idk.
You will need to dremel the tabs off the switch perches to get them to fit as well. Factory bars have the little holes drilled for fast factory assembly. No biggie.

 

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@OCL you gotta be the first person I've seen to actually drill holes for the switches. Big props to you for the effort. If you have the evo protaper bars, those things are made out of some tough proprietary alloy so it had to be challenging.

 

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Did you retain the rubber bar mounts in the triple with that setup? I left the lower mount alone and used the fat bar adapters and my bars are dead. Weird you're having vibes now. Let is know how it goes.

 

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Haha! That's the same way I mounted mine, minus the end weights. I'm not sure why it makes such a difference but it could just be the extra mass on the triple. I'm glad you got it sorted out. 👍