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Trek Fuel Ex 6.5 broken swing arm options

946 Views 7 Replies 4 Participants Last post by  JPSeuropa
Do I have any options? I can't find one anywhere and Trek doesn't make it anymore. Could I go with a newer model fuel EX arm? I love this bike and it still looks brand new. The disc brakes were just too much for it. The material is literally the thickness of a soda can. My option that I can think of is put an aluminum insert inside and TIG it. Any input would be greatly appreciated.
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Info is pretty scarce on that MY in the Trek tech docs but I did some digging into the suspension side of things and found this:

It looks like it might be possible to do something with anything up to alloy 10/11MY parts.

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This is from my memory but I recall the 5.5 and 6.5 being very odd ducks and you need a swingarm from the same model, from the same model year.
This is from my memory but I recall the 5.5 and 6.5 being very odd ducks and you need a swingarm from the same model, from the same model year.
This is what i was thinking too. This has been broken for over a year now I just been riding my diamondback. But I would really like to get this going again.
Info is pretty scarce on that MY in the Trek tech docs but I did some digging into the suspension side of things and found this:

It looks like it might be possible to do something with anything up to alloy 10/11MY parts.

View attachment 1965292
I appreciate it. I guess if I can find a decent deal on a rear section on a slightly newer one I will give it a shot. Trek told me last year to pound sand they don't sell parts for bikes older than 4 years. That's pretty messed up being it looks like that MY07 frame was used to 2009. They said they don't recommend keeping a trek longer than 4 years because it's time to buy a new one. I am sure some people can afford that. but one a $6000 bike it better last me my entire life. I have a Camry I paid $600 for that lasted longer than this bike. It is upsetting.
I would try to weld it after figuring out what standard series aluminum is closest to whatever the swingarm is made from so that an appropriate filler can be chosen.. It may require a post welding aging or heat treatment. I did this on a friend's old Stumpjumper swingarm and he got a few years out of it until he had similar failure on the opposite stay. I had beefed up the material thickness at the weld just because I could.
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