Shimano Cassette 9 Speed Ratios

11-21 – 11.12.13.14.15.16.17.19.21
11-23 – 11.12.13.14.15.17.19.21.23
12-21 – 12.13.14.15.16.17.18.19.21
12-23 – 12.13.14.15.16.17.19.21.23
12-25 – 12.13.14.15.17.19.21.23.25
12-27 – 12.13.14.15.17.19.21.24.27
13-23 – 13.14.15.16.17.18.19.21.23
13-25 – 13.14.15.16.17.19.21.23.25