Issues with fast freehub wear:
Fast wearing freehubs:
this causes shifting issues, and noise while coign trough the cassette, it only takes few days for me with light xc/commuting/pavement riding to wear it to the point of play so the cassette is dancing. TThis is hub I had Rebuilt new balls, new cones, new axle, everything was of course done correctly, it was only used few days, but I had already gone through one wobbly freehub after just a few days of riding, so I replaced it with this one, the same issue major wobble after just a few rides. I have also noticed Shimano has changed the design, there was a rubber seal visible, on this one there is not. after few short asphalt rides, the axle bent on the drive side, the cones were loose, the rotor was rubbing, and the cassette was dancing horribly, due to play in the freehub, which reduced the shifting performance significantly. I am done with these freehubs, I will get a new wheel. These hubs just can’t take me using them, I got heavier and heavier, I am an adult now and destroy all cheapness. ‘ The lack of points of engagement is also unbearable and awkward. The bent axle was not caused by jumping or loose QR or anything wrongdoing on my part, this is a flawed outdated hub.
The freehub has about 1 mm play when it’s new.
I had these hubs on several bikes since I was a teen boy, I have been using these freehubs until failure, and the freehubs lastest about 1 season before they failed, so I couldn’t pedal, but now as I am an adult, I wear them in few days so the play will be significant, which reduces shifting performance, and I can move the freehub in all direction with knocking sound, I Won’t would not take the chance of being many tens of kilometers away from my home, and needing to call a taxi, So I had to swap the freehub,
any play in the freehub will cause wear in the cassette and chain, I think I should upgrade the hubs.
With proper hubs with proper freehubs you will get zero play no with a lot of use and abuse and crashing, for example, Hope pro 4, It has been problem free, and has not shown any signs of wear after a whole year of use.
Frequent Service interval king:
No proper seals, causing contaminants like water, cat hair, and to come inside the hub, so if riding in the winter you would have to service them every week to 2 weeks intervals.
The deore h bs have rubber seals, instead of steel covers, buttjey are compatible with the m475 hubs Shimano Bl-M525 L.H.Lid Unit – Y8S49801
To service these freehand, you need a special tool, which is difficult to get, or you have to make one your self, This is not acceptable.
RJ The Bike Guy made a great video showing you how to service Shimano hubs:
Annoying low engagement:
The freehub has a horrible engagement, so you have a big dead zone before you actuate freehub, making technical climbs harder.
because of the outdated design, and reliability issues and the extreme service intervals, even if you swap to the seals for deore, as the freehubs wear out so fast, that it’s pointless to fix it. I can’t recommend these hubs, these hubs are a nightmare.
There are far better options out there, I recommend getting Hubs with sealed cartridge bearings, and more bearings, and an easier more modern design, Hope and Industry nine, Chris king, are a perfect example of this, are more on that list of course.