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[cadence90]

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[oldpotatoe]

Originally Posted by cadence90

GFK,
Thank you very much for the extremely thorough reply.

I confirm that the current chainring bolts are 2-part (4 torx on front + 4 slot on rear + the single torx at the crankarm rear). The chainring bolts are stamped "FC-RE303".

The chainrings themselves are labelled "11 SPEED ONLY", "CAMPAGNOLO", and "ESP ACTUATION SYSTEM", and are of course stamped "50/34".

The crankarms are Super Record 11-S Ultra-Torque.

If you have access to these numbers in your records, in order to determine the actual year, and any possible/or not compatibility with Campagnolo 52/36 rings, the crankarm numbers are:

DS white sticker:
0804103
FC9-SR540C
0001366753

DS Campagnolo sticker:
Campagnolo
L 175
OB 790056
SN 0582

The NDS crankarm stickers are all the same, except for:
0001366752



I would never think of drilling etc, the spider bolt holes!

If I cannot properly mount Campagnolo 52/36 rings on this crankset, I will just leave it at 50/34.

Thanks again.

That's very thorough but I have 36t CRs, Athena, on both my Campagnolo compact cranks, one Record(square taper) and one Athena. So, if the small ring isn't threaded, it will work fine on your crank. As for the 52t..aftermarket for sure as there are really no Campag 52t 110/112mm BCD rings around(5 arm)..I have TA 48t on both cranks and they work great.

[cadence90]

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