Upgrade your drivetrain with the Shimano Deore Di2 M6200 Complete Upgrade Kit, bringing precision, durability, and trail-ready tech to your ride at a more approachable price. Anchored by the M6250 long-cage rear derailleur and M6100 cassette, this 12-Speed system delivers fast, reliable wireless Di2 shifting and a wide 10–51T gear range with built-in Automatic Impact Recovery and enhanced ground clearance.
The included M6250 Di2 shifter offers a customizable feel and fit, with multi-shift modes, a programmable third button, and satisfying tactile response, all designed to integrate seamlessly with your cockpit via I-SPEC EV or clamp band.
Powering the system is Shimano’s compact BT-DN320 battery, tucked safely inside the derailleur for protection and easy removal, and topped off with the EC-EN100 charger to keep you fully juiced for long days on the trail.
Whether you’re upgrading from mechanical or stepping into Di2 for the first time, this kit has everything you need for a smoother, smarter ride.
What's Included:
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RD-M6250 Di2 Rear Derailleur – 12-speed long cage with Shadow ES design and automatic recovery.
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SW-M6250-R/IR Di2 Shifter – Wireless Di2 shifting with multi-mode customization and ergonomic adjustability.
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CS-M6100 10–51T Cassette – Wide-range 12-speed cassette with Hyperglide+ for smooth, fast shifting under load.
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CN-M6100 12-Speed Chain – Durable chain with enhanced retention and quick-link installation. Includes two quick links.
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BT-DN320 Di2 Battery – Compact, removable battery powers your Di2 drivetrain for up to 340 km per charge.
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EC-EN100 Di2 Charger – Slim, easy-to-use charger designed specifically for the Di2 battery.
Why Choose the Deore Di2 M6200 Complete Upgrade Kit?
Experience next-level performance on the trail with this fully wireless drivetrain upgrade, featuring advanced shifting technology and race-proven efficiency. The Deore M6200 kit delivers precise, intelligent shifting with customizable settings through Shimano’s E-Tube app, while its durable components are engineered to ride harder, shift smoother, and go faster.
Deore Di2 M6200 Complete Upgrade Kit Specs:
Derailleur
| Model: | M6250 |
| Model ID: | RD-M6250-SGS (Long Cage) |
| Shift Technology: | Wireless |
| Communication Protocol: | Di2 |
| Max Tooth: | 51t |
| Drive Config: | 1x |
| Weight: | TBD |
Cassette
| Model: | Deore M6100 |
| Model ID: | CS-M6100-12 |
| Gearing: | 10-51t (510% Range) |
| Technology: | HYPERGLIDE+ |
| Cog Sizes: | 10-51t: 10-12-14-16-18-21-24-28-33-39-45-51t |
Shifter
| Model: | M6250 |
| Model ID: | SW-M6250-R/IR |
| Shifter Type: | Wireless |
| Clamp: | 22.2mm bar clamp, I-SPEC EV |
Chain
| Model: | Deore M6100 |
| Model ID: | CN-M6100 |
| Type: | HG |
| Rear Speeds: | 12 |
| # of links: | 126 |
| Weight: | 252g |
Works With
The Shimano Deore Di2 M6200 Complete Upgrade Kit is 100% backwards compatible with your current Shimano 12-Speed cassette, crankset/chainring, and chain. Compatible models include: XTR M9100 and M9200, Deore XT M8100 and M8200, SLX M7100, and Deore M6100 and M6200.
This kit will attach to modern framesets via a derailleur hanger, including the Universal Derailleur Hanger (UDH).
Long cage derailleurs are compatible with 51t cassettes.
Please reach out to us with any questions you may have about anything we sell. We want to make sure you get the right items the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!
Shipping
We currently offer both economy and expedited shipping options through FedEx and USPS.
Most orders totaling over $59 are eligible to ship for free via an economy ground option of our choice.
Due to larger box sizes, handlebars, and other oversized items, an additional shipping fee will be applied.
Most bikes ship free within the continental US. Bike shipping to AK, HI, or PR is available at an additional charge depending on the exact delivery location.
If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee, depending on your location.
RETURNS
Should there be an issue with the item you bought, or if you no longer need your purchase, we will be happy to set up a return.
Component & Gear Returns
Returns may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items that have been installed or show wear of any kind.
Bike Returns
Returns or exchange requests for bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes incur a $200 restocking fee, and the customer is responsible for the return shipping costs.
Return Shipping
Customers may choose to use our provided flat-rate return shipping label at $9, or choose a carrier of their choice to handle their product return.
The $9 flat rate label will be deducted from the refund issued for the return. You can either print this label after requesting a return from the Order History section in your Account profile, or you can request that we email the label to you.
For all other return shipping methods, please email us at sedona@thundermountainbikes.com after submitting your return request so that we can confirm the shipping information you should use to return your item(s).
REFUNDS
We will process your return after receiving your returned item(s) and inspecting their condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed. All refunds will be returned to the original payment method. No store credit or other refund methods are available.
EXCEPTIONS
If you receive defective or damaged products or if we sent you the wrong item(s), please contact us using the phone number or email below.
RETURN PROCESS
To request a return, please log in to your customer account by clicking the 
Profile icon in the top right of any page or visit account.thundermountainbikes.com.
1. In the Email field, enter your email address and click Continue.
2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.
3. Go back to the online store and enter a six-digit verification code to log in.
4. Find and click on the order you want to submit a return for.
5. If your order has more than one item, select only the items you want to return.
6. Select a return reason and add a note for the store if needed.
7. Click Request Return.
Once your return request is approved, you will receive an email with shipping instructions and a return shipping label.
QUESTIONS ABOUT RETURNS?
If you have any questions concerning our return policy, please contact us at:
