Dura-Ace Shimano FC-7800 Chainring Review Posted by Pelicandy October 19, 2018 in Drivetrain Components Type: Double Speed: 10-speed Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity. Random Products ACS Southpaw Freewheel, Left Hand Drive 20t 3/32... JGbike Sunrace 11-50T 12 Speed Cassette CSMZ90 WA5... K-Edge PRO Road Braze-on Chain Catcher SRM w/Power... Token Alloy Chainring Bolt/Nut for Shimano Road Re... Cycling Dura Ace Outdoor Recreation Parts & Components Sports & Outdoors