GRX RD-RX817 Di2 Rear Derailleur

$485.99

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Quantity

From per month with

i or with

Availability

Free shipping within Canada on most orders over $150

Returns accepted until January 15, 2026

Extended price matching until December 15, 2025

Please note, items may not be exactly as pictured

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 an ON/OFF switch for the chain tensioner. The RD-RX817 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. It is compatible with mtb cassettes with a 42T low sprocket max.

Specifications

Average weight	318 g
Direct attachment	_
E-tube connector (pcs)	0
E-tube port (pcs)	1
Firmware update by E-TUBE Project	_
Fluoric coated link bushings	4
Low sprocket_Max.	42T
Low sprocket_Min.	40T
Rear speeds	11
Sealed bearing guide pulley	_
Sealed bearing tension pulley	_
Top-Normal Spring Type	SHADOW RD+
Top sprocket_Max.	11T
Top sprocket_Min.	11T
Total capacity	31T