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Is this a trek 620 or ??

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Is this a trek 620 or ??

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Old 03-26-11, 06:04 PM
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toobigbike
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Is this a trek 620 or ??

I am trying to determine what model this trek bike is. It has the following components

has philwood hubs cyclo pro
mondolo brakes
dura-ace crank
suntour cyclone shifters
reynolds 531 frame
reynolds 631 forks
shimano dura-ace goosneck
matrix tires


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Old 03-26-11, 06:16 PM
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My guess is that it started life as an 82 model 715.

The Phil, DA, and Modolo bits are replacements.
Would have had Campy, SR, and Grand Compe, respectively.
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Old 03-26-11, 06:22 PM
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Looks a lot like my 728 too except no center pull brake bridge.
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Old 03-26-11, 06:24 PM
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The crank and stem are from around 1983 or 84. Shimano Dura Ace AX crank with Dyna drive pedals, there was a company that made adapters for regular pedals to install to this cranset. I have a Specialized Allez with this same group.
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Old 03-26-11, 07:06 PM
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720/728, the chain stays are too long to be anything else. My 728 doesn't a brake bridge, the cable stop is held by the seat post binder bolt.
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Old 03-26-11, 07:12 PM
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Originally Posted by brian3069
720/728, the chain stays are too long to be anything else. My 728 doesn't a brake bridge, the cable stop is held by the seat post binder bolt.
Ah you are right! I just took another look at mine.
OP.
That is a nice catch, now remove those riser bars before you get caned!
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Old 03-26-11, 07:26 PM
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The serial number on the bottom bracket indicates the model and size. Go to https://www.vintage-trek.com for the list
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Old 03-26-11, 08:20 PM
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Look up, or give us, the serial number. Also what is printed on the Reynolds stickers on frame and fork. Ignore all the components, they're all replaced, at least anything major. These bikes did not come with straight bars, just for one point. 720s and some 620s came with the extra-long chainstays. NOT 610s or 710s. I'd be very surprised if any '80s 6xx or 7xx had any 631 in them, or 631 stickers.

The paint looks original. On the Vintage Trek site you can look up what they thought about years and models based on color scheme.
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Old 03-26-11, 09:02 PM
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It is stamped 60tsi on the bottom and 035869 for the serial which looks like a custom frame?
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Old 03-26-11, 09:39 PM
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Serial number makes it a 1982 720
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