Quick ViewShimano Tiagra FC-4703 10-Speed Chainring - 39t, Asymmetric 110/74 BCD, Black, with Nut and Holder $20.40
Quick ViewCampagnolo Chorus 12-Speed Chainring and Bolt Set - 36t, 96mm Campagnolo Asymmetric, 4-Bolt, Black $116.62
Quick Viewe*thirteen Helix Guidering - 30t, 10/11/12-Speed, 52/55mm Flip Flop CL, 3/5mm Offset, e*thirteen DM, Black $24.95