SHIMANO GRX RD-RX812 1x11S rear gearbox

Equipped with an integrated chain stabilizer, the Shimano GRX RD-GRX812 derailler guarantees a more silent ride and offers safety and precision of change on mixed soil.
This derailler is equipped with an ON/OFF switch for the tensioner. The RD-RX812 gearbox is compatible with 42d maximum pigno cakes.

CHARACTERISTICS

- Use: Gravel / Adventure
- Series: Shimano Grx 800
- Command compatibility: Shimano Dual Control Lever
- chain stabilizer with on / off mechanism
- Shadow RD design
- Max ahead difference: 17D
- Total capacity: 31D
- Materials: Aluminum + CFRP + steel
- Weight (producer): 267 gr.
- color: black
- cage length: media