RATIO MECH COMPATIBILITY
The Ratio Mech came about not only as a way to improve shifting performance, but also as a way to mix and match different drivetrain options. The Mech will work with a wide range of different setups simply by using a different cable fin so, to help you get the right Mech, here’s a detailed dive into compatibility.
Please note the Mech is only compatible with 1x setups
| Cassette | Drop-Bar Shifter // Fin | Flat Bar Shifter // Fin | Mounting | Cage |
| SRAM Transmission 12s (10-52) | SRAM Apex 12s // Fin G SRAM 10/11s + Ratio 1×12 Wide ratchet* // Fin C | SRAM Eagle 12s // Fin G SRAM T Type 12s // -coming soon- | DM only | Long |
| SRAM Eagle 12s (10-50, 10-52) | SRAM Apex 12s // Fin H SRAM 10/11s + Ratio 1×12 Wide ratchet* // Fin D | SRAM Eagle 12s // Fin H | Hanger, DM | Long |
| SRAM XPLR 13s (10-46) | SRAM Apex 12s + Ratio 1×13 ratchet + Ratio Cable Spool* // Fin B SRAM 10/11s + Ratio 1×13 ratchet* // Fin B | None | DM only | Short |
| SRAM XPLR 12s (10-44) | SRAM Apex 12s // Fin A SRAM 10/11s + Ratio 1×12 Road ratchet* // Fin D | SRAM Eagle 12s // Fin A | Hanger, DM | Short |
| SRAM AXS 12s (10-28, 10-33, 10-36) | SRAM Apex 12s // Fin A SRAM 10/11s + Ratio 1×12 Road ratchet* // Fin D | SRAM Eagle 12s // Fin A | Hanger, DM | Short |
| SRAM 11s (10-42, 11-42) | SRAM 11s // Fin D | SRAM 11s // Fin H | Hanger, DM | Short |
| Shimano 12s (10-51) | Shimano GRX 12s // Fin E | Shimano 12s // Fin F | Hanger, DM | Long |
| Shimano 12s (9-45, 10-45) | Shimano GRX 12s // Fin E | Shimano 12s // Fin F | Hanger, DM | Short |
| Shimano 11s (11-42, 11-50) | Shimano GRX 11s // -coming soon- | Shimano 11s // -coming soon- | Hanger, DM | Short |
| Campagnolo Ekar 13s (9-36, 9-42, 10-44) | SRAM 10/11s + Ratio 1x13C ratchet* // None – jockeys currently incompatible Campagnolo Ekar 13s // None | None | Hanger, DM | Short |
*If you want to use 10/11 speed shifters with a 12 or 13 speed cassette, you’ll need to upgrade the ratchet in your shifter. Additionally, if you have a SRAM Apex 12 speed shifter you will need to install our Cable Spool too.
For more information on the difference between the direct mount version and the hanger mount version of the Mech, check out this explainer page.
