specifically developed for 1x12 speed transmissions, the GRX rear derailler combines wireless functionality with immense duration. Perfect performance and precise change on any soil and in difficult and muddy conditions. The large lever, expertly arranged, the skid plate design and the robust exchange pulleys not only increase resistance, but also reduce the risk of dirt infiltration to a minimum. No less protected is the battery (not included), which is housed inside the derailler's housing and cannot slip even on rough terrain, but can still be easily removed at the expiry of the next charge.

thanks to the Shadow ES structure, the electronic derailler of2 has a thin and low -profile wedge -shaped design. The stabilizer also fits perfectly into the housing, so there are no edges that can come into contact with obstacles. The result is a significant reduction in the risk of shocks or stone strokes. In case of impact, the rear derailler not only absorbs it, but is immediately reported in its original position thanks to the automatic recovery function. In addition, the innovative chain stabilization technology, with its double spring design, guarantees greater tension of the chain and consequently an excellent retention of the same.

- minimum pigno: 10t
- Max pigno: 51t
- BT -DN320 battery not included
- Long cage
- weight 450gr

Compatibility:

exchange commands: ST-RX825, ST-R9270, ST-R8170, ST-R7170
Cassette: CS-M9200, CS-M9100/M9101, CS-M8200, CS-M8100, CS-M7100, CN-M8100, CN-M7100, CN-M6100