Cam Selection
The Jab derailleur is compatible with many modern 1x drivetrains!
How is this possible?
There is a unique cam (red part shown below) for each drivetrain configuration. Each cam controls the motion of the derailleur for each individual shift, matching the shifter index points to the cassette gear spacing.
Cam Options
We prioritize cams for the most common drivetrains, which means SRAM and Shimano 12 and 11 speed MTB and gravel bike configurations.
For less common drivetrains we also plan to release cams, but the release will be delayed because developing each cam involved a lengthy measurement and tuning process, as well as a component manufacturing lead time and minimum order quantity.
Note: The cam and derailleur cannot influence all shift performance factors. Other major factors include cassette shift ramps, the shifter mechanism internals, drivetrain wear and cleanliness, and adjustment issues.
| Cam Number | MTB or Drop Shifter | Number of Speeds | Shifter | Cassette |
| 245 | MTB | 12 | SRAM Eagle | SRAM Eagle |
| 246 | MTB | 12 | SRAM Eagle | SRAM T-Type |
| 247 | MTB | 12 | Shimano | Shimano |
| 248 | MTB | 11 | SRAM | SRAM |
| 249 | MTB | 11 | Shimano | Shimano |
| 250 | Reserved | |||
| 251 | Reserved | |||
| 252 | Drop | 12 | Shimano | Shimano |
| 253 | Drop | 11 | SRAM | SRAM |
| 254 | Reserved | |||
| 255 | Drop | 11 | Shimano | Shimano |
| 256 | Reserved | |||
| 257 | Reserved | |||
| 258 | Reserved | |||
| 259 | Reserved | |||
| 260 | Reserved |