Shifty is a small but extemely effective little device for your sram 1 11 or 1 12 rear derailleur. Shifty is a small but extemely effective little device for your sram 1x11 or 1x12 rear derailleur. Particularly when riding in wet and muddy conditions we found out that sram rear derailleurs lack shifting accuracy due to the fact that the original pulley rotates with its plastic body on a steel axle.
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