Shimano XTR M9250 Di2 Drivetrain Upgrade Kit

About the Shimano XTR M9250 Di2 Drivetrain Upgrade Kit

WIRELESS PRECISION FOR 1X12

Take your drivetrain to the next level with Shimano’s most advanced mountain bike shifting system. The XTR Di2 M9250 Upgrade Kit brings wireless control, ultra-fast response, and refined ergonomics to your 1x12 setup - all in a sleek, race-proven package.

This kit includes the cutting-edge RD-M9250 GS rear derailleur , optimised for 10-45T cassettes. It uses Shimano’s proprietary FREE SHIFT and AUTO SHIFT technology when paired with compatible drive units, enabling seamless gear changes while coasting or under load. With Hyperglide+ chain management, you’ll experience chain retention and smooth transitions across the entire gear range - even under high torque.

The SW-M9250-IR I-Spec EV shifter offers a customizable, compact interface with wireless connectivity and intuitive ergonomics. Paired with Shimano’s reliable DN300 battery and charger , this kit gives you everything needed to upgrade to fully integrated XTR Di2 performance.

Whether you're racing XC or building a dream bike, this kit delivers responsive, silent, and intuitive shifting backed by Shimano’s top-tier engineering.

What’s Included

- XTR RD-M9250 GS 12-speed Rear Derailleur (Wireless, Short Cage - max 45T)

- XTR SW-M9250-IR Di2 Shift Switch (Right, I-Spec EV)

- Shimano DN300 Internal Battery

- Shimano EC300 Charging Cable

- Quick Link (12-speed)

Key Features

- Wireless Di2: Clean setup and fast, precise electronic shifting.

- FREE SHIFT / AUTO SHIFT: Enables shift logic based on cadence and terrain (requires compatible system).

- XTR-Level Construction: Durable, race-ready performance with lightweight magnesium and alloy materials.

- I-Spec EV Mounting: Clean cockpit integration with adjustable positioning.

- Compatible with Shimano EP801 / EP600 Drive Units (for full FREE SHIFT/AUTO SHIFT functionality).

Specifications

Component

Specification

Derailleur Model

Shimano XTR RD-M9250-GS (Short Cage)

Shifter Model

Shimano XTR SW-M9250-IR (I-Spec EV)

Max Cassette Size

45T

Battery

Shimano DN300 Internal Battery

Charging Interface

Shimano EC300 Charging Cable

Connectivity

Wireless Di2

Mount Type

I-Spec EV

Use

XC, Trail, All-Mountain

Compatibility

Shimano 12-Speed / EP801 / EP600

Chain

12-speed HG+ (Quick Link included)

Brand

shimano