The upgrade kit from Shimano allows you to convert an existing mechanical 1x12-speed Shimano drivetrain to an electronic Di2 system. This set includes the RD-M9250-GS rear derailleur, the SW-M9250-IR shifter, the BT-DN320 battery and the matching EC-DN100 charger. An SM-CN910-12 chain lock is also included, which makes the system easier to install and use. The kit is specially designed for 12-speed cassettes with a gear ratio of 9-45T and is ideal for use on mountain bikes. With this upgrade, cyclists can benefit from the advantages of electronic shifting technology, which offers precise shifting and improved performance.
Bike area of use | Mountain bike |
Cage length | Long |
Item number | 58512570 |
Manufacturer | Shimano |
Category | Rear derailleurs |
Manufacturer no. | 72.89767 |
Release date | 4.6.2025 |
Colour | Black, Grey |
Exact colour description | Black, Grey |
Material group | Metal |
Cassette compatibility | 12-speed |
Maximum pinion size | 45 x |
Shift capacity | 36 x |
Bike area of use | Mountain bike |
Cage length | Long |
Fixation rear derailleur | Direct mounting |
Design rear derailleur | Shadow+ |
Switching system | Electric |
Circuitry | Top normal |
Model year | 2025 |
Bicycle product series | Shimano - XTR |
Country of origin | Japan |
CO₂-Emission | |
Climate contribution |
Length | 35.60 cm |
Width | 16.40 cm |
Height | 10.10 cm |
Weight | 1.07 kg |
Product Safety |
How often does a product of this brand in the «Rear derailleurs» category have a defect within the first 24 months?
Source: GalaxusHow many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: GalaxusHow often is a product of this brand in the «Rear derailleurs» category returned?
Source: Galaxus