Looks like there is an official F25 retrofit kit from BMW, match your spec to the correct entry on the link below and phone your dealer with the part code to enquire about cost inc fitting...
http://www.realoem.com/bmw/showparts...26&hg=66&fg=95
If they can do it no doubt a quality independent can cheaper.
__________________
Current 2016 F80 M3 Saloon, Alpine White & Silverstone Full Leather. Love it.
Past 2015 F13 M6 Coupe, San Marino Blue & Opal White Individual Leather. Gone but not forgotten.