I have a 2012 Trek 7.5 Fx Hybrid bike that I need to replace the Freehub body on the rear wheel. There are no identifying marks on this hub anywhere. The cassette that is mounted on the Freehub body is a CS-HG61-9. The gears on the cassette is 11-34 and its a 9 speed. Is there anyway to exactly identify what freebody hub this is so I can get an exact replacement?
I tried a 10mm hex key and its too small by a couple of mm. It looks more like a spline in there than a hex. Guess I'm out of luck. I was replacing the cassette since the gears I use most are worn out and noticed there is a bit of slop in the freehub. I was going to take care of everything at the same time while I have it apart. Even though its a fairly a new bike I have over 15k miles on it. just normal wear and tear. Thanks