SHIMANO DURA-ACE DOUBLE CHAINRING FC-7900 – 39T (japan import) Review Posted by GiantPandaisy May 19, 2018 in Drivetrain Components This fits your . Make sure this fits by entering your model number. Shimano 7900 Dura-Ace Chainring MI1KY39000 [Sports] Shimano 7900 Dura-Ace Chainring MI1KY39000 [Sports] Cycling Outdoor Recreation Parts & Components SHIMANO Sports & Outdoors