cdn.mos.bikeradar.com
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/RD/EV-RD-M986-3430_v1_m56577569830801193.pdf
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/RD/EV-RD-M985-3156A_v1_m56577569830799960.pdf
edit:
som nasiel clanok, kde je to porovnane/pofotene:
http://www.bikerumor.com/2012/03/04/2013-shimano-direct-mount-rear-derailleurs-coming-tech-breakdown/
www.bikerumor.com
www.bikerumor.com
edit 2: len pre info - fotku ktoru si dal, je 985. tam je torx a mensi priemer = nekompatibilne s direct mount. novsi model, cize 986 ma inbus a vacsi priemer = kompatibilne s direct mount. na to si treba dat pozor.