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What Dura Ace 7400 Aero Seatpost is this?

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What Dura Ace 7400 Aero Seatpost is this?

Old 06-05-17, 05:36 PM
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What Dura Ace 7400 Aero Seatpost is this?

Hello all,

I was wondering what model or version would this seatpost be?

DSCN8720.jpg

This one doesn't have any etching on it.

Also if there's a Shimano pdf that gives all the parts of these seatposts, complete with a diagram, that would be sweet if you could post that up too.

Thanks for any and all replies and they are most appreciated.
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Old 06-05-17, 06:07 PM
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If it is a Dura Ace, it will say so. Was the engraving ground off, or never there? I think Nitto made those for Shimano.
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Old 06-05-17, 08:08 PM
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No there was never any engraving on it. I've seen these before, I just don't know the exact model number of it.
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Old 06-05-17, 08:18 PM
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Originally Posted by User1 View Post
No there was never any engraving on it. I've seen these before, I just don't know the exact model number of it.
If it were a Dura Ace, it would say. If it was the (mostly) identical Nitto, it wouldn't say Dura Ace. You likely have the Nitto. NTTAWWT
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Old 06-05-17, 08:48 PM
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This might help

VeloBase.com - Component Listing
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Old 06-05-17, 10:09 PM
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Originally Posted by jiangshi View Post
If it is a Dura Ace, it will say so. Was the engraving ground off, or never there? I think Nitto made those for Shimano.
I'm not buying that this is a Nitto. This has Shimano engraved on it;

DSCN8718.jpg

Nitto wouldn't do that, right? I'm kinda thinking this is a SP-7310
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Old 06-06-17, 09:26 PM
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i've two versions of this seat post; one that says shimano 600 tricolor, the other shimano ultegra. the scalloping edges seem to change between models. perhaps that would be your clue?
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Old 06-06-17, 09:45 PM
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I was able to conclude that this one is a SP-6400-B. That was concluded by the weight of it. It was reported here that it was 284g. I weighed mine at 286g. The other ones I was thinking it was was 224g.

Thanks for everyone's help.
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Old 06-15-17, 08:37 PM
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I am not quite sure about it.

Last edited by Kasimga8; 09-16-17 at 07:04 AM.
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Old 06-15-17, 08:45 PM
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Looks like it's been polished. Maybe VeloBase.com - Component: Shimano SP-7310, Dura-Ace AX (B-type)
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Old 06-15-17, 11:03 PM
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Originally Posted by curbtender View Post
The weight doesn't come close to what I have. This one states 224 grams and mine weighed 286 grams.
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