Torsion bar? Any ideas is it big job to fix what caused this?

Four bolts broke off is this a big job to fix any ideas as to what caused this. Doing some maintenance and discovered this

It on a 2012 canam commander limited rear

At the dawn of Commander time, it was a somewhat common issue. The bolts used there were originally 10mm, then upgraded to 12mm. The worst part is, of course, removing the broken bolts. If threadlocker was used, you may need to use heat to facilitate removal. I believe loosening and subsequent movement is what led to failure. Some replaced with higher grade bolts, but I think replacement with use of loctite (red) was the ultimate fix.

Once you get the bolts out they can be drilled then tapped to use the 12mm bolts. The bolts from dealer aren't cheap. But worth the money. I looked for them through bokt supply houses and no one had or could get them .


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Do not know where this is but from my experience, I would take the part off if possible to accomplish the task. If a part of frame and cannot be removed then remove all panels around it.

Good watched a utube video got it off and it’s and a machine show they will remove the bolts I hope thanks for the replies cheers

Now for bolts any ideas on a replacement they are m10x35

High graded bolts seem to be made out of superior materials that do not rust. Stainless fasteners that will take the load are hard to find and expensive. A lot of stainless on market these days is too soft. Get a fully threaded bolt if you have to and shorten it as needed.

The oem bolts are grade 8.8 flanged hex head. Was the other end of the torsion bar ok? If so, you could replace the broken ones with grade 10.9, which is about 30% stronger.

If you ride hard tap to 12mm. If just a mall crawler go back with the 10mm.

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well 15 mm are in there now so took the part to a local machine shop they will fix it tomorrow i guess/I hope. anyone know the torque setting for these? hoping to get er back together tomorrow. thank ya all fo the help!