Chainring Dark Gray 30T CY5-SHC (Multi-Speed)

The ultimate high-performance chainring that surpasses oval chainrings. *For Sugino cranks "OX2-901D" ① CYCLOID II Mechanism This is Sugino's original non-circular chainring with a completely new mechanism that sets it apart from the so-called oval shape. Its greatest feature is the autofocus mechanism with a special teeth design, which further enhances the characteristics of the non-circular shape. ② Super Hill Climb In addition to the features of ①, it is ultra-lightweight, making it extremely effective for hill climbing. Furthermore, it is CNC-machined from ultra-high-strength material, achieving both light weight and high strength. It is effective not only for hill climbing but also for long rides. ③ No Chain Watcher Required Perfect shifting performance prevents chain drop, so no chain watcher is required. This helps prevent unnecessary weight increase. type:Double(inner) P.C.D.:74mm Teeth Variation: 30T (Dark Gray) Compatible Cranks: OX901D/OX901D Classic, OX2-901D/OX2-901D Classic *Cranks and outer chainrings are sold separately. *Only compatible with Compact Plus+ specifications. Please use CP110S 44T or 46T outer chainrings.