Amazon.com : SRAM X-Sync Chainring 38 Teeth 110mm BCD Polished Grey/Matte Black, Includes Bolt and Nut for Hidden Position Hole : Sports & Outdoors
WolfTooth ウルフトゥース Elliptical Direct Mount Chainring for SRAM 38T compatible with SRAM Flattop :wolf-ovalsdm38ft:AVANT GARDE WEBショップ - 通販 - Yahoo!ショッピング