Thread: Mid 80's trek
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Old 05-24-12, 02:23 PM
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wrk101
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Ignore the components, unless you know they are original. Most of my bikes do not have original components. Active bike owners like to upgrade wheels/components/whatever. Best shot of dating is any part you think is original: seat post and stem are the two I check first.

In particular, SIS is a common upgrade. I have picked up several bikes from the mid 1980s where the owners upgraded them to SIS in the late 1980s.
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