If you manage to remove 7mm off the width of the hub, all you would need is .......

http://www.chainreactioncycles.com/u.../rp-prod34779?
and
http://www.chainreactioncycles.com/u...ar/rp-prod5855


They would basically turn the 12mm thru axle hub into something like......

http://www.chainreactioncycles.com/u.../rp-prod155163