This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Cart 0

No more products available for purchase

Add order notes
Subtotal Free
View cart
Shipping, taxes, and discount codes are calculated at checkout
Shimano GRX RD-RX815 Di2 Rear Derailleur Rear Derailleurs Road

GRX RD-RX815 Di2 Rear Derailleur

$242.44 Regular price $303.05

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-RX815 Di2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting and is compatible with road cassettes with a 34T low sprocket max.

Average weight 287 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. 34T
Low sprocket_Min. 30T
Max front difference 17T
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 38T

30 Day Return Policy

Free shipping within Canada on most orders over $150

Please note, items may not be exactly as pictured