Hey all.

I need some help please. I have a Cannondale super six Evo with a 105 group set.

The only non 105 component is the crank which is an FSA gossamer.


The bike has about 1500 miles and i like to stand up and power up the few inclines we have around.


Unfortunately after climbing over a hill i noticed a clunking with each pedal stroke. It sounds like a ball bearing falling down each time and is loud.


I put the bike on my workbench and took the chain off and confirmed it is coming from the crank area.


I removed the crank and the bearings. I almost expected there to be something inside rattling around but there wasn't.


1 bearing seems noticeably stiffer and had some black grease that seemed to have come from inside the bearing.


I would love to change to a Shimano 105 crank and understand i need an adapter but i am completely lost when looking for the right one.


I have no bottom bracket in my bike. I only have press in bearings with no c clips.

This has thrown me off as it looks different to all the write ups i see.


Can someone help me find the right parts please?