Hey all,
Like many, I wanted shorty levers (clutch especially). After a bit of cross-referencing and visual inspection, I've found the 2012 450 SX-F clutch levers to be completely interchangeable with the 14 Enduro R. I'm currently running the KTM/Magura OEM shorty:
2012 450 SX-F Clutch 50302031300 CLUTCH LEVER CPL.
I haven't swapped the brake lever, but I'm 99% sure the 2013 Duke MC/lever is the same, so you can probably find plenty of aftermarket specials. Or try to cross reference the part number.
Gotta love KTM for interchanging parts through the lineup. Hope that helps.