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I removed the front derailler.
You can have my old DA 9000 cranks when you've found me a set of Hollowgram cranks...
Wait, what do you mean it's not available, yeah they are.
Buy crank arms and buy the bigger rings:
http://www.wiggle.co.uk/shimano-dura-ace-fc-9000-55t-and-54t-outer-chainring/
http://www.evanscycles.com/products/shimano/dura-ace-9000-hollowtech-ii-54-42-tooth-double-road-crankset-ec045792
@hippy when you went single ring what did you do with derailleurs - just remember not to touch the front one?
what I really want is Dura Ace 165mm with 55x42 for faster TTs and IM Mallorca - long downhill section - but its not available so considering just buying the chainrings and putting them on my 6800 but it'll look a bit shit, but I don't really want to have to buy a dura ace cainset and chainrings at the same time as $$$$$
Unless anyone knows of something more aero available in 165 and 55x42 without making my q factor wider which the Rotors seem to do...