I can only speak for scott out of that lot

Frame with mech hanger 788g, fork cut with scott bung 323g

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My bikes:-
- 2011 Boardman MTB Pro HT-10.22kg
- 2011 Lapierre DH 920-17kg

Carbon - Lightens your bike and your wallet
OCBD - Obsessive Compulsive Biking Disorder

Wilier Zero.7 from earlier today. Size Large with full Matte and Gloss Black paint. Included all cable guides, derailleur hanger, and aluminum bb sleeve.

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- Zipp rims will break if you look at them too hard
- R-Sys wheels will spontaneously explode
- The ZG crankset will never, ever exist
- Everyone needs Lightweights, even if they're fat and old
- Parts actually made of metal are SO 10 years ago

weighed a cervelo r5ca size 51 with bb bearings at 721g.

The Endurdo bearings in the Cervelo R5ca weigh 49 grams. So that leaves you with 672 grams for the frame.

Many of the other frames will require a press fit shell which adds weight.

I think the best way would be to compare frame with bearings, hanger, collar, fork and possibly even headset. But if someone wants naken frame weight there it is at 672 grams.

I forget marketing weights of unpainted frames, talk is cheap.

DAMN that's light

One can only compare same sizes as well.

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Wilier Cento Uno
Colnago Master X-light
Wilier 18carati

Obviously

It could be hard. Primo only small number of people can afford so expensive frames, secundo not every customer who owns one visits WW forum to post weight, tertio try to find an owner of each frame from such a small number of WW members with, let's say, 56cm size frames to compare their (frames') weights. Doable, but difficult I think.

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Cervelo R3 Team

As stated earlier today, I'm a Felt fanboy, and the F1 comes in at 792 per their website.

It would be easier to have an acceptable size range, as many mfg/brands do not offer the same sizes necessarily.
Example: 55,56,57 or "Medium" would be within a range, no?

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Exp001

my scott addict R1 52cm (frame + fork) = 911.72 grams using the Park Tools Digital Scale.

We don't accept website weights, besides, that's not really anywhere near the lightest frame

This is a unbranded frame weighs from 820g, picture is for L size weigh 870g.

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enjoy cycling, enjoy life......
www.focus-carbon.com

I have the Cervelo CA in a 54, and besides its light weight - and cool geometry - the company claims its their strongest frame set ever.

I can vouch for the weight - not the strength - but the thing is super stiff and responsive - it feels like nothing I have ever been on before.

My frame weight was about the same - I think a bit more (few more grams) with the bearings installed - I swapped the SS bearings for ZERO Ceramic.

PS - agree that when comparing frame weight it should be the frame, fork, headset, and complete bottom bracket. In addition to the lighter frame, the Cervelo comes stock with a THM fork (super light), and direct fit BBright - not press fit - no cups - less weight. However, that said, the Cervelo also comes stock with a Cane Creek AER headset - which stinks. I swapped mine for a Cane Creek 110 - same size - real bearing - bottom doesn't change - and have had very good results. The AER uses a fake norglide bearing which in my opinion is a gimmick.

Bike gained about 20 grams -but well worth it.

How about Spin frames? They were among the lightest a few years ago.

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CANYON Ultimate AL