Shimano GRX Di2 Rear Derailleur (RD-RX817) Shimano Caffélatex Tubeless Tape is light

Caffélatex Tubeless Tape is light

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Shimano GRX Di2 Rear Derailleur (RD-RX817) Shimano Caffélatex Tubeless Tape is lightWith 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. Features Adjustable