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Shimano GRX Di2 RD-RX817 Rear Derailleur 1 X 11-Speed 42T Max

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SKU: KV-00737
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  • Description
  • 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-RX817 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. and is compatible with mtb cassettes with a 42T low sprocket max.


    • Adjustable chain stabilizer prevents chain slapping and drops
    • Switch stabilizer ON/OFF to match the terrain
    • Gravel-tuned clutch tension


    • Silent and uninterrupted rear shifting on rough terrain
    • Smooth and reliable mixed surface shifting
    • Compatible with current road DUAL CONTROL LEVER
    • Top sprocket: Max. 11T/Min. 11T
    • Low sprocket: Max. 42T/Min. 40T
    • Total capacity: 31T


    Average weight318 g
    Top-Normal spring type_SHADOW RD+
    Direct attachment
    E-tube connector (pcs)0
    E-tube port (pcs)1
    Firmware update by E-TUBE Project
    Fluoric coated link bushings4
    Low sprocket_Max.42T
    Low sprocket_Min.40T
    Rear speeds11
    Sealed bearing guide pulley
    Sealed bearing tension pulley
    Top-Normal Spring TypeSHADOW RD+
    Top sprocket_Max.11T
    Top sprocket_Min.11T
    Total capacity31T
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