I had Venhill make me a custom clutch cable for the xc a month or so ago, if you get them to make one you'll find that the nipple at the clutch end wont have a nipple sleeve and the ferrule at the clutch end that slots into the cable guide on the casing is slightly too large and you'll need to rub/file it down slightly as the BMW is slightly tapered, its only 0.3mm or so out but it wont fit if you dont.