Shimano GRX Di2 Rear Derailleur (RD-RX817) BX PSI Compatible with tubeless ready and

Compatible with tubeless ready and full UST wheels/tyres

Torx® 8/10/20/25

One of a kind special oval shape (Patent Pending)

Ranging from 2Nm-10Nm

Bottom bracket with small ball bearings for lightweight

Shimano GRX Di2 Rear Derailleur (RD-RX817) BX PSI Compatible with tubeless ready andWith 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