I believe that the Diamondback 38925-09 cable that Twolanerider mentioned is a "cable" and not a hydraulic line. This won't work for your 2011 FLHXSE2 since it has a hydraulic clutch.
I have the same bike, and advise you to check with either Magnum Shielding or Goodridge. I can't find any Harley part number for a longer hyd. clutch line in the Big Book (perhaps there is a table or listing, but I don't see it.)
According to Goodridge, the stock length is 68", so you would need a 76" line for your application. Goodridge has a 75" and 77", part numbers HD1001-1CCH-75 and HD1001-1CCH-77. Go to this page to download the Big Twin application guide:
http://www.goodridge.net/webapp/wcs/stores/servlet/category2_-1_64_10551_32019_retailRegarding Magnum Shielding, go to the following webpage for custom length hyd. clutch lines:
http://www.magnumshielding.com/store/hyd_clutch_result.php?categories_id=9&keywords=*&search_length=&search_end_1_fittings=&search_end_2_fittings=&x=50&y=12
Probably would be best to call and chat with a rep. from either company to be sure you get what you need. Hope this helps ...
Mike