The Shimano GRX RX825 rear derailleur is part of the 2×12 GRX Di2 RX825 groupset. With a capacity of up to 40 teeth, it has a wide range so you can always find the right gear. Also, the derailleur features convenient technologies to provide consistent and accurate shifting performance. Consistent and smooth gear shifting Thanks to the clutch in this derailleur, the chain stays properly tensioned. Even when riding on rough terrain, you will find that the chain stays firmly in place and the derailleur does not clatter. This also promotes the derailleur's shifting behaviour; you will also shift quickly and smoothly in rough conditions. On the derailleur a switch has been placed that allows you to take the tension off the clutch for easy removal of the wheel.
The Shimano GRX RX825 rear derailleur is part of the 2×12 GRX Di2 RX825 groupset. With a capacity of up to 40 teeth, it has a wide range so you can always find the right gear. Also, the derailleur features convenient technologies to provide consistent and accurate shifting performance. Consistent and smooth gear shifting Thanks to the clutch in this derailleur, the chain stays properly tensioned. Even when riding on rough terrain, you will find that the chain stays firmly in place and the derailleur does not clatter. This also promotes the derailleur's shifting behaviour; you will also shift quickly and smoothly in rough conditions. On the derailleur a switch has been placed that allows you to take the tension off the clutch for easy removal of the wheel.
in 20 offers
last seen 21 Oct 2026
The lowest price we last saw for Shimano GRX Di2 RD-RX825 12-Speed Rear Derailleur was $394.17 at Lordgun.com.au, compared across 18 retailers (last seen 21 Oct 2026). Prices may have changed since.
The all-time low we recorded was $310.16 on 3 Mar 2026.
Prices last updated 21 Oct 2026.
Shimano GRX Di2 RD-RX825 12-Speed Rear Derailleur
The Shimano GRX RX825 rear derailleur is part of the 2×12 GRX Di2 RX825 groupset. With a capacity of up to 40 teeth, it has a wide range so you can always find the right gear. Also, the derailleur features convenient technologies to provide consistent and accurate shifting performance. Consistent and smooth gear shifting Thanks to the clutch in this derailleur, the chain stays properly tensioned. Even when riding on rough terrain, you will find that the chain stays firmly in place and the derailleur does not clatter. This also promotes the derailleur's shifting behaviour; you will also shift quickly and smoothly in rough conditions. On the derailleur a switch has been placed that allows you to take the tension off the clutch for easy removal of the wheel.
The Shimano GRX RX825 rear derailleur is part of the 2×12 GRX Di2 RX825 groupset. With a capacity of up to 40 teeth, it has a wide range so you can always find the right gear. Also, the derailleur features convenient technologies to provide consistent and accurate shifting performance. Consistent and smooth gear shifting Thanks to the clutch in this derailleur, the chain stays properly tensioned. Even when riding on rough terrain, you will find that the chain stays firmly in place and the derailleur does not clatter. This also promotes the derailleur's shifting behaviour; you will also shift quickly and smoothly in rough conditions. On the derailleur a switch has been placed that allows you to take the tension off the clutch for easy removal of the wheel.
Last updated at 21/10/2026 20:32:22
SHIMANO Rear Derailleur 12sRD-RX825 GRX Rear Derailleur, Multi-Colour, One Size
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano GRX Di2 12v RD-RX825 rear derailleur
Delivery $40.15
Shimano RD-RX825 Rear Derailleur Grx DI2 Shadow+ 12-SPEED
Delivery between 26 Oct – 3 Nov $9.50
Shimano GRX Di2 RD-RX825 Rear Derailleur 12 Speed
Free delivery between Fri – Tue
RD-RX825 REAR DERAILLEUR GRX Di2 SHADOW+ 12-SPEED 36T MAXIMUM 2x12
Free delivery between 26 Oct – 3 Nov
Shimano RD-RX825 Rear Derailleur GRX 12-Speed 36T Max 2x12 Di2
Free delivery between 22 Oct – 2 Nov
Shimano Grx Rx825 Di2 Shadow+ 12sp Rear Derailleur
Delivery $15
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano GRX RX825 Di2 Shadow+ 12sp Rear Derailleur
Delivery $14
Shimano GRX RX825 Di2 Shadow+ 12sp Rear Derailleur
Delivery $12.61
SHIMANO GRX Rear Derailleur (Di2 spec.) RD-RX825 12-speed Direct mount compatible
Free delivery between 26 Oct – 3 Nov
| Battery Capacity | Large battery capacity |
| Charger Type | USB charger |
| Number Of Speeds | 12 speed, 12-speed |
| Shifting Type | Electronic |
| Shifting Indexing | Yes |
SHIMANO Rear Derailleur 12sRD-RX825 GRX Rear Derailleur, Multi-Colour, One Size
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano GRX Di2 12v RD-RX825 rear derailleur
Delivery $40.15
Shimano RD-RX825 Rear Derailleur Grx DI2 Shadow+ 12-SPEED
Delivery between 26 Oct – 3 Nov $9.50
Shimano GRX Di2 RD-RX825 Rear Derailleur 12 Speed
Free delivery between Fri – Tue
RD-RX825 REAR DERAILLEUR GRX Di2 SHADOW+ 12-SPEED 36T MAXIMUM 2x12
Free delivery between 26 Oct – 3 Nov
| Battery Capacity | Large battery capacity |
| Charger Type | USB charger |
| Number Of Speeds | 12 speed, 12-speed |
| Shifting Type | Electronic |
| Shifting Indexing | Yes |
