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Shimano Dérailleur arrière GRX RDRX812SET 11 vitesses

€109.99
SKU
IRDRX812
2 x 55.00 € free of charge

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The Shimano GRX RD-RX812 rear derailleur is designed for 1x11-speed single-chainring gravel drivetrains. Its SHIMANO SHADOW RD+ technology stabilises the chain on rough terrain, while its long cage accepts a cassette up to 42 teeth. It thus offers a drivetrain suitable for hilly gravel routes and demanding rides.

The Shimano GRX RD-RX812 rear derailleur is designed for mechanical single-chainring gravel drivetrains. Its long cage design allows for the use of a cassette with a large 40 or 42-tooth cog, providing suitable gear ratios for routes with elevation changes.

  • Use: Gravel and cyclocross
  • Drivetrain: 1x11-speed single chainring
  • Range: Shimano GRX
  • Technology: SHADOW RD+
  • Cage Type: Long
  • Cassette Compatibility: 11-40 teeth / 11-42 teeth
  • Average Weight: 267 g

SHADOW RD+ Technology: a more stable chain

The derailleur's integrated stabiliser limits chain movement when the bike is on uneven paths. This reduces the risk of chain drop and drivetrain noise. The system can be switched on or off depending on riding conditions.

Technical Specifications

  • Reference: RD-RX812
  • Number of Speeds: 11
  • Compatible Chain: Shimano HG 11-speed
  • Max Large Cog: 42 teeth
  • Min Large Cog: 40 teeth
  • Small Cog: 11 teeth
  • Pulleys: 11 teeth
  • Cable Tension Adjustment: Yes
  • Mounting: Standard or Direct Mount depending on the frame

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Our Opinion

The Shimano GRX RD-RX812 is a suitable choice for 11-speed single-chainring gravel drivetrains. Its long cage allows for the use of a cassette up to 42 teeth and its stabiliser provides greater peace of mind on technical trails.


Product Name Shimano Dérailleur arrière GRX RDRX812SET 11 vitesses
SKU IRDRX812
Original Product Name Dérailleur arrière GRX RDRX812SET 11 vitesses
Gender Mixed
Bar code 4550170448882
Brand Shimano