When comparing a 6 series and 7 series Madones, with exactly the same specification in terms of components, the price difference is a mere £50! So my question is what is the difference between the two frame series and why bother having two when there is only a £50 price difference?!

Allegedly the 7 is a higher grade of carbon, so we are supposed to assume it's lighter and/or stiffer. Are you comparing prices using Project One? I didn't realise it was that close. Are you certain you've got the same cockpit components, saddle etc? Some of those bits make a big difference to the total price.

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Blog: http://thesetbackpost.com/

Thanks MM, but indeed I have the exact same specification, apart from the frame. I am using the Trek Project One web site.

If im right there is about £500 difference between the frames

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Madone Five Series 2013
Shimano Dura-Ace 9000
Mavic Cosmic SLE 2013

In Canada there is exactly a $600 price difference if all components are the same

Sounds like a clitch on the Project One Web site! In any event just to confirm that the difference is only the carbon?

What's that in $/gram?

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http://djconnel.blogspot.com/
Fuji SL/1

madone is an absolutely outstanding ride, worth every £$ in my book

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Madone Five Series 2013
Shimano Dura-Ace 9000
Mavic Cosmic SLE 2013

James Huang massed his 52 cm 6-series with standard paint job at 1000 grams. Smaller sized 7-series are comfortably under 800 grams. Under 750 grams if you go for the U5 vapour coat @ $1000 extra. At under $3/g I would say it's a good buy (though not the U5 coat).