This is just my opinion since I haven't bought these yet.
It looks like they are quite stout. I would also imagine that you can use these regardless of bushings just your on road ride will be a bit rougher...although if your a canyon carving fool(which I'm not) than I would also imagine that you would get a more level ride(less side to side tipping).

BTW I could be wrong but I believe this is the same company that is working on a gear set for the T-case. From 2.02:1 to 3.685:1.
Now thats what I'm talking about. I think they are in the last phases of testing out these gears and rumor has it they will cost $1200.
If this is the same company they do have a high reputation for high quality and backing their products.

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