Shimano Rear Derailleur 11-speed GRX RD-RX812 40-42T max
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Shimano Rear Derailleur 11-speed GRX RD-RX812 40-42T max for 11-speed 11-42t cassette. A new rear derailleur specifically designed for gravel and cyclocross bikes. Features a clutch mechanism familiar from mountain bikes. Total capacity 31t, primarily for 1x11 drivetrains.
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Description
Shimano Rear Derailleur 11-speed GRX RD-RX812 40-42T max
- For 11-speed 11-42t rear cassettes
- New rear derailleur designed specifically for gravel and cyclocross bikes
- Clutch mechanism familiar from mountain bikes
- Total capacity 31t, i.e. mainly for 1x11
drivetrains
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 an ON/OFF switch for the chain tensioner. The RD-RX812 rear derailleur is compatible with MTB cassettes with a 42T max low sprocket.
- Silent and uninterrupted rear shifting on rough terrain
- Adjustable chain stabilizer prevents chain slapping and drops
- SHIMANO SHADOW RD+
- Smooth and reliable shifting on mixed surfaces
- 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
Shimano GRX RD-RX810-GS / RD-RX812-GS Shadow RD+ Rear Derailleur 11-speed - medium
Shimano GRX - Explore Beyond
Instead of telling gravel riders what they needed, Shimano asked them what they wanted for their offroad adventures. The result is the Shimano GRX components, which represent the first series specially developed for riding on rough roads and through gravel. Shimano GRX sets itself apart from the rest of the component world with its gravel-specific ergonomics, optimized gearing options, rugged reliability, and a quiet and stable drivetrain.
Shimano GRX RD-RX810-GS / RD-RX812-GS Shadow RD+ rear derailleur
The mechanical Shimano GRX rear derailleurs, RD-RX810 and RD-RX812, are characterized by quiet, smooth, precise, and reliable shifting even in the most demanding terrain. This is mainly due to the Shadow RD+ chain stabilization system, which prevents the chain from slapping and dropping and also reduces unnecessary movement of the derailleur cage, thus ensuring uninterrupted shifting performance. This is why an ON/OFF switch can be found next to the upper pulley, much like Shimano’s mountain bike derailleurs. When activated, the rear derailleur pivot takes a firm hold to reduce excessive movement, noise, and general "chain chatter".
The RD-RX810 rear derailleur accommodates cassettes with 11-30 teeth up to cassettes with 11-34 teeth. In contrast, the RD-RX812 rear derailleur is suitable for 11-40 and 11-42 teeth
Specifications
- Brand
- Shimano
RD-RX812
- Top sprocket
- Max. 11T/Min. 11T
- Low sprocket
- Max. 42T/Min. 40T
- Total capacity
- 31T