Shimano Dura-Ace 9000 Oval

Model 38T or 40T or 42T or 44T or 46T or 48T or 50T or 52T or 54T or 56T, Offset -2.6mm or 58T, Offset -3.6mm
Chainring shape Oval
Offset, mm 0 (38-54T), -2.6 (56T), -3.6 (58T)
Made from 7075-T651 Aluminum Alloy
Surface coating Anodizing
Made with CNC milling
Ovality 12%
Timing 108° after TDC (top dead center)
Compatible cranksets Shimano Dura-Ace 9000
Weight, grams 76 (38T), 81 (40T), 86 (42T), 91 (44T), 111 (46T), 119 (48T), 142 (50T), 148 (52T), 152 (54T), 166 (56T), 187 (58T)
Chain compatibility 10/11/12-speed chains : including Shimano HG+ and SRAM AXS flattop (incl. T-type) chains
Color Black or Blue or Gold or Green or Orange or Red or Silver or Violet