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Shimano XTR Di2 M9050 upgrade-kit 1-speed external battery (SM-BTR2 with SM-BTC1)

31808 / 2015

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  • Rear derailleurs
  • shift lever right
  • Battery
  • Battery holder
  • Display unit
In case that the groupset compilation above contains items that you don't need (e.g. crankset) then you must simply add the groupset to your basket and then visiting the shopping basket. There you can comfortably remove single items from the groupset. The price will be adjusted in realtime.
Optional items
Please pay attention: The price and availability claim above is related to the groupset items and not to the optional items; If you add some optional items you'll see the final price at the shopping basket.
  • Attention:
    • Shimano EW-SD50 Di2 must be ordered separately as they are not included in delivery. - Please measure your frame in case to determine the required wire lengths. - You can simply return wires if the ordered length is not correct or if you ordered more cables then necessary. - For this specific groupset configuration you need 5 wires.
    • If you want to learn more about possible groupset configurations or if you want to get an overview just have a look at page 15 to 17 from this document.

    Rediscover control. Rediscover efficiency. Discover Di2.

    Shimano's XTR M9050 Di2 shifting system brings the seamless control and instant response that only digital shifting can provide to the M9000 Rhythm Step drivetrain. This ushers in the digital age for mountain bikers, giving them control over their ride experience, no matter their discipline, like never before.

    Pairing Di2 with close gear steps means that shifting becomes a reflex. Decreased shift effort and superior ergonomics allow you to shift without decreasing your grip on the handlebar, keeping you in perfect control of both your bicycle and your effort. Your on-bike readiness will reach new heights with XTR Di2. As soon as the thought of a shift springs to mind, you can instantaneously react.

    The programmable, customizable, expandable E-tube Di2 platform brings a quantum leap in personalization to mountain biking. XTR Di2 is going to change the way you ride. How it changes is entirely up to you.

    Shimano's new XTR Di2 M9050 family features the optional Shimano Synchronized Shift, allowing for customizable synchronized front and rear shifting via a single FIREBOLT shifter. By simplifying the rider interface, shifting a mountain bike will have never felt so natural.

    The M9050 derailleurs communicate gear position and automatically execute front and rear shifts when a rider asks for a sequentially larger or smaller gear. This improves efficiency by minimizing time spent on smaller chainrings and cogs.

    Thanks to the programmable options with the Di2 platform, riders can choose when front shifts occur based on terrain and personal preferences. An audible alarm will warn of an upcoming front derailleur shift so that a rider can choose to remain in a given gear. Additionally, on a mountain bike with both front and rear FIREBOLT shifters installed, the rider can manually override shifts at any time, creating perfect cadence control. With Shimano Synchronized Shift your experience on a mountain bike has never been this intuitive, this personalized, this connected or this focused.

    This article cannot be shipped to countries outside of the European Union and all other countires of the European Free Trade Association (EFTA).
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    • Rear derailleur
    • Right/rear shifter
    • Display unit
    • Battery SM-BTR2 + Battery holder SM-BTC1
    • WITHOUT electrical wires
  • The following list shows the pre-configurated groupset list - you are able to remove single items at the shopping cart.
    Rear derailleursPicture Description
    • XTR Di2 RD-M9050 rear derailleur long cage [RD-M9050-SGS]ready for sending in 1-3 business days
    • XTR Di2 RD-M9050 rear derailleur medium cage [RD-M9050-GS]ready for sending in 1-3 business days
    shift lever rightPicture Description
    • XTR Di2 SW-M9050 shift lever rightIN STOCK (only few items left in stock)
    • Di2 BT-DN110 battery for mounting inside seatposton order (delivery date unknown)
    Battery holderPicture Description
    • XTR Di2 SM-BTC1 external battery case for bottle cage mountingIN STOCK (only few items left in stock)
    • XTR Di2 SC-M9050 display unitIN STOCK (only 1 left in stock)
    Optional items
    you'll get those items for a better price in combination with a groupset
    Please pay attention: The price and availability claim above is related to the groupset items and not to the optional items; If you add some optional items you'll see the final price at the shopping basket.
    • XTR BR-M9000 Race disc brake I-Spec front
    • XTR BR-M9020 Trail disc brake I-Spec front
    • XTR BR-M9020 Trail disc brake I-Spec rear
    • XTR PD-M9000 SPD
    • XTR PD-M9020 Trail SPD
  • Show all items from ShimanoShimano is a Japanese multinational manufacturer of cycling components, fishing tackle, and rowing equipment. The company was founded in 1921 and is headquartered in Sakai, Osaka, Japan. Shimano is one of the largest and most well-known manufacturers of cycling components in the world, and its products are used by professional and amateur cyclists alike.

    Shimano's cycling components include a wide range of products, such as rear derailleurs, front derailleurs, cranksets, disc brakes, and gears. The company's products are known for their high quality, durability, and performance. Shimano's road bike components are divided into different product lines, such as Dura-Ace, Ultegra, and 105, with Dura-Ace being the highest-end line and 105 being the most affordable. Shimano also offers components for mountain bikes, including the XTR, XT, and SLX lines.

    One of Shimano's most popular and well-known products is its SPD (Shimano Pedaling Dynamics) system, which is a type of clipless pedal. The SPD system allows for a more efficient transfer of power from the rider's leg to the pedal, and it is widely used by both road and mountain bikers. Shimano also offers a wide range of fishing tackle, including fishing reels, rods, and lures.

    Shimano is also known for its commitment to sustainability, for example, in 2020 Shimano announced its goal to reduce CO2 emissions from its factories by 30% by 2025. Additionally, Shimano supports various cycling-related organizations and events, such as the Tour de France and the Giro d'Italia.

    Overall, Shimano is a well-established and respected company in the cycling industry, known for its high-quality and durable products, as well as its commitment to sustainability and support of the cycling community.