Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
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If you intend to keep it, repalace, as if you don't replace worn parts, they will affect others, leading to an increaced repair cost. Don't understand what you mean by 'maintain' as when a part is worn, it has to be replaced.
For the prices quoted, they seem high, as this is a mechanics forum, can you do any work yourself, as just looking at nashbar, you can get a cassette (5600) and chain for less than $100