Wireless Di2 precision meets trail-tough durability in the Shimano DEORE Di2 RD-M6250-SGS — a 12-speed electronic rear derailleur built to handle the demands of aggressive mountain riding without missing a beat. With a 10–51T capacity and seamless wireless shifting, it gives trail riders the gearing range and reliability of Di2 at an accessible price point.

Highlights

  • Wireless 12-speed Di2 electronic shifting — crisp, consistent gear changes every time
  • Shadow ES chain stabilisation keeps the chain quiet and controlled on rough terrain
  • Automatic Impact Recovery restores derailleur alignment instantly after trail strikes
  • Integrated BT-DN320 battery charges in approximately one hour, removable for convenience
  • Long cage (SGS) supports 10–51T cassettes for a massive 510% gear range
  • Impact-deflecting wedge shape and skid-plate with durable steel plate protect against debris and rock strikes
  • Shielded solid pulleys prevent debris from jamming the drivetrain
  • Bluetooth and ANT+ connectivity for pairing with cycle computers and third-party devices

Wireless Di2 Performance

The RD-M6250-SGS brings Shimano's Di2 electronic shifting technology to the DEORE level, delivering the same precise, repeatable gear changes found in higher-end groupsets. Fully wireless operation eliminates cables from the equation, simplifying setup and maintenance. The on-board BT-DN320 battery is tucked inside a protected cavity within the linkage — it stays secure over the roughest terrain yet remains easy to remove for charging.

Shadow ES & Impact Protection

SHIMANO Shadow ES is a slimmer, stronger evolution of the Shadow RD+ chain-stabilising concept. It keeps the chain tensioned and quiet under hard pedalling and on bumpy descents, reducing chain slap and dropped chains. The derailleur's wedge-shaped profile is designed to deflect rocks and roots rather than catch them, while a steel skid plate adds an extra layer of protection to the body. If an impact does move the derailleur out of position, the Automatic Impact Recovery function brings it straight back into alignment — no manual adjustment required.

Compatibility & Fit

  • Speeds: 12-speed Shimano Mountain Di2
  • Cage length: Long (SGS)
  • Maximum sprocket: 51T
  • Minimum sprocket: 10T
  • Total chain wrap capacity: 41T
  • Mount type: Shimano Rear Direct Mount (10×1 standard)
  • Colour: Black/Grey
  • Requires compatible Shimano Mountain Di2 shifters and components
Shimano products are covered by Shimano's manufacturer warranty against defects in materials and workmanship. Warranty periods and terms are determined by Shimano and may vary by product category and region. For warranty support, return the item to Tune Cycles.
  • 12-speed wireless Shimano Di2 electronic shifting
  • Shadow ES chain stabilisation for quiet, controlled shifting on rough terrain
  • Automatic Impact Recovery — derailleur self-realigns after trail strikes
  • Integrated BT-DN320 battery — removable and charges in approximately one hour
  • Long cage (SGS) — supports 10–51T cassettes (510% gear range)
  • Impact-deflecting wedge shape and steel skid plate
  • Shielded solid pulleys resist debris ingress
  • Bluetooth and ANT+ connectivity
  • Shimano Rear Direct Mount (10×1 standard)
  • Colour: Black/Grey
SpecificationDetail
ModelRD-M6250-SGS
SeriesDEORE Di2 (M6200)
Speeds12-speed
Shifting TypeWireless Di2 electronic
Cage LengthLong (SGS)
Maximum Sprocket51T
Minimum Sprocket10T
Total Chain Wrap Capacity41T
Pulley Teeth13T
Mount TypeShimano Rear Direct Mount (10×1 standard)
BatteryBT-DN320 (integrated, removable)
ConnectivityBluetooth / ANT+
Chain StabilisationShadow ES
ColourBlack/Grey
SKU SHM-IRDM6250SGSA
Barcode # 4550170748661
Brand Shimano

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