Absolute Black Premium Oval Road 50T, Compatible with Shimano 9100/8000 - PVD

- Special PVD Rainbow Titanium coating process makes chainrings very durable and incredibly beautiful - NOTE: Due to the nature of the PVD process, every chainring is unique and color may vary. Not a single chainring is the same which makes your new ring completely individual - Compatibility: Compatible with Shimano Dura-Ace 9100, R9120, R9150 & R9170 Di2 and Ultegra 8000, R8020, R8050 & 8070 Di2, 105- R7000, R7020, R7070. They can also retrofit all 9000 and 6800 series cranks but use bolt covers for best appearance. 10 / 11 / 12sp compatible - For outer chainring please order "long bolts" from us OR bolt covers. Changing inner chainring to oval only? use original bolts - Inner and outer oval chainrings are optimized with smooth shifting in mind - Features smooth angled surfaces, (6) up-shifting ramps (outer ring), and (12) down-shifting points (outer ring) - Oval rings help the rider spin smoother and generate more power - Example: 32t is equivalent to 30t at deadspot and 34t