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When to replace rear cassette(3 posts)

When to replace rear cassettetmac13
Nov 4, 2002 3:09 PM
I have an Ultegra rear cassette, 1 1/2 years old with about 6500 miles. How can you tell when they need to be replaced?
It'll tell you.Spoke Wrench
Nov 4, 2002 3:50 PM
A new chain will skip in the gears that you use most.
And another pointKerry
Nov 4, 2002 4:52 PM
You often can visually see the worn teeth on your high use cogs. You'll see a "shark fin" look to the tooth. As SW said, the jumping chain is a dead give away. Have a new cog set on hand, install a new chain, and stand up in a few gears. You'll know right away. In all likelihood, an Ultegra unit with 6500 miles on it should be replaced.