I bought a new Freehub Body when I started hearing a weird clicking noise coming from my 2009 Mavic Ksyrium Elite wheels. The plastic bushing was worn from age. Ordered this hub body replacement instead of trying to replace just the bushing, as I didn't want to risk damaging the splines inside the old hub body. The install was easy and my 2009 wheel feels like new!
Simple conversion needed from Shimano hub to 11 speed Campy. Installed and use on Mavic 40C wheel. Price was significantly less than LBS and ALL other online bike shops and eBay. Install took all of 8 minutes.
My freehub was making a very loud noise on descents when freewheeling. Seems when the bearing surface wears down it can cause this problem. Tried cleaning it first, but the noise came back. This new hub fixed the issue!
The hub does what it's suppose to do but I also have found the nylon bushing to be a slight issue. Besides using mineral oil I've used a small amount of Phil Wood grease on the bushing . Seems to prolong the life of the hub. When the bushing wore down a little I'd get a little play in the cassette and it would make a little knock , knock noise when cranking but the grease took care of it .
I purchased a NOS 2003 ssc sl wheelset with a campy record 10sp cassette on it. Beauty of a wheelset and rare in this condition. Needed it to be shimano 10 speed. You will need a spacer behind the cassette in most cases when going from ed10 to m10 or m11. Changed out the pawls from the ed10 to this m10 and was up and running. Just beware of the pawls and springs flying out and getting lost. Did the work on an old white bed sheet and that saved me. hehe
I love that Mavic continues to use steel for their cassette carrier, I wish they would just change to a standard bearing instead of the plastic ring that interfaces the hub. There is just to much drag with this set up and wears quickly.