- SHIMANO GRX Rear Derailleur 11-speed (42T max low sprocket)
RD-RX812
SHIMANO GRX - Rear Derailleur - SHIMANO SHADOW RD+ - 42T max low sprocket - 11-speed
With an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain tensioner. The RD-RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max.
- Silent and uninterrupted rear shifting on rough terrain
- Adjustable chain stabilizer prevents chain slapping and drops
- SHIMANO SHADOW RD+
- Smooth and reliable mixed surface shifting
- Switch stabilizer ON/OFF to match the terrain
- Gravel-tuned clutch tension
- Compatible with current road DUAL CONTROL LEVER
- Top sprocket: Max. 11T/Min. 11T
- Low sprocket: Max. 42T/Min. 40T
- Total capacity: 31T
Specifications
- Series: SHIMANO GRX 11-speed
- Weight: 267 g
- B-Axle Hollow axle: Yes
- Cable adjuster: Yes
- Compatible chain HG-EV: 11-speed/HG-X11
- Direct attachment (Conventional): Yes
- Fluoric coated link bushings: 4
- Low sprocket Max.: 42T
- Low sprocket Min.: 40T
- Pulley G pulley bearing: Yes
- Pulley Sunken type pulley bolt: Yes
- Pulley Teeth: 11T
- Pulley T pulley bearing: Yes
- Rear speeds: 11
- Top-Normal Spring Type: SHIMANO SHADOW RD+
- Top sprocket Max.: 11T
- Top sprocket Min.: 11T
- Total capacity: 31T
Technologies:
SHIMANO SHADOW RD+
- Less distraction quiet drive train
- Rear derailleur stabilizer reduces chain slap
- Simple solution for chain drop
- Lighter and more efficient than roller type chain device
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