Originally Posted by Shiznaz
If we are talking about Ti I have a question:
I had my friend I'm going to be touring with over from Hamilton last weekend and he was inspecting my bike stash. He found my XTR cassette I got at the fall bike show and immediately starting telling me it was not a great choice because some of the cogs are titanium so they will wear faster. Wouldn't the titanium cogs wear slower than the Al cogs? Do I actually have to worry?
I think only the three biggest cogs are ti on XTR, the rest are steel. The ti cogs do wear out faster than steel, but unless you are using them a lot, I don't think you should worry about it. Usually, I get the most wear on the middle cogs on my road cassettes, b/c those get the most use.
If you change your chain before it lengthens too much you can get many thousands of km out of a single cassette, ti cogs or otherwise. I would think over 10 000 km. I've had the same cassette on my road wheelset for two years-must be 10 000 km. Gone through a few chains though.