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Discussion Starter · #1 ·
i just received my AD Boivin suspension upgrade kit today for my 99 fz670 with the ARM supsension, i will be putting it on shortly, i have heard many people say it is a huge difference over stock, just wondering if anybody here has it or knows anybody that has it, and what do you or they think about it? what are the pros and cons
 

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I had the AD springs on mine. It worked lots better. I also put some gas shocks on it too. That was better too. I couldn't keep the idler wheels on for nothing. I finally went without the plastic in the bearings. This worked. I had to make new shafts for all the wheels on the bottom. There is one wheel on the top that always got chewed up too. I couldn't ever find a fix for that. I also put gas shocks on the front too.
 
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