FSA SL-K Modular Direct Mount Chainring FSA Power Full Speed Ahead chainrings have powered multiple World, Tour de France, and Olympic champions, and will exceed your expectations. This chainring can be used with FSA SL-K 90 BCD inner chainrings. It is made from precision CNC-machined AL7075/T6. Features Black anodized finish with laser-etched logo Compatible with FSA Modular crankset (Gossamer/Energy/SL-K/ K-FORCE)Drivetrain Compatibility: Shimano 10/11-speed, SRAM 10/11-speed, FSA 11-speed, Campy 10-speed Material: Precision CNC-machined AL7075/T6Chainring can be used with FSA SL-K 90 BCD inner chainrings | Fsa | Full Speed Ahead Sl-K Modular Direct Mount Chainring 48T | Aluminum