FSA Crankset keeps coming loose

Anybody else have problems with the MegaExo style FSA chainsets coming loose? I've got the SLK carbon on my best road bike and every 100 miles or so I have to tighten the crankbolt back up. I've tried threadlock which helps but it still comes loose over time. Any suggestions?


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I had the same problem on a Truvativ GXP MTB crankset. I think the interface is a similar piece of engineering. I have a nasty feeling that once the interface splines get worn by pedalling it when it is loose, then it never goes back together properly. I feel your pain!
I fixed it by replacing the crankset with a Shimano one.
two wheels good; four wheels bad
posted by cat1commuter [251 posts] 19th January 2010 - 17:35
Just the reply I needed, I now have proof to convince the missus I need a new Campag Corus chainset to match the rest of the groupset!! happy days
posted by stuke [55 posts] 19th January 2010 - 20:30