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I picked up a 600AX recently and its 335 grams!
In this pic the bolt looks duller, appearing alloy and mine is steel but that would not account for a small fraction of the 75 grams difference.
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Ordered a cheapie vinyl one off ebay yesterday. Very thin vinyl. May be too narrow too. 16mm at the front, only 11 at the rear.
Noticed some at the decal sellers:
http://www.velocals.com/servlet/the-823 ... our/Detail
What tubing is this? That is light, but there's not much left of that bottom bracket.
The link shows a 2400 gram tube set (501) as superlight! Ha!
Would be nice to know what the current tube sets weigh. Especially 831 and 931.