Designed to deliver uncompromising performance on aggressive terrain, the Deore XT Di2 M8200 Enduro Drivetrain Kit blends Shimano’s legendary durability with wireless precision shifting. Whether you’re climbing techy singletrack or bombing steep descents, this fully integrated system offers smooth power transfer, pinpoint gear changes, and bombproof construction across every component. At the heart of the kit is the RD-M8250 wireless rear derailleur, featuring automatic impact recovery, extended ground clearance, and Shimano’s latest SHADOW ES chain stabilization. Paired with the SW-M8250 shifter, you get ergonomic comfort, customizable shift modes, and crisp actuation with every press. The FC-M8200 crankset, forged with Shimano’s proven HOLLOWTECH II construction, delivers strength and stiffness optimized for enduro demands. Combine it with the SM-CR86 direct-mount chainring for max compatibility and confidence. Powering the drivetrain is the compact BT-DN320 battery, safely tucked inside the derailleur, with up to 340 km of runtime per charge. The included EC-EN100 charger ensures recharging is quick and hassle-free. Rounding out the system, the CS-M8200 cassette delivers a massive gear range with HYPERGLIDE+ shifting that’s lightning fast even under heavy load. The CN-M8100 chain keeps everything running smoothly with enhanced retention and SIL-TEC durability. What's Included: RD-M8250 Di2 Rear Derailleur Wireless 12-speed derailleur with automatic impact recovery—built for precise, durable shifting on rough trails. SW-M8250 Di2 Shifter Customizable, ergonomic shifter with programmable shift modes and a tactile, responsive feel. FC-M8200 Crankset Lightweight and rigid Hollowtech II crank arms optimized for enduro power and efficiency. CS-M8200 10–51T Cassette Wide-range 12-speed cassette with smooth Hyperglide+ shifting under load. BT-DN320 Di2 Battery Compact, integrated battery with up to 340km of ride time per charge. EC-EN100 Battery Charger Simple, compact charger for the BT-DN320 battery. CN-M8100 Chain SIL-TEC treated chain with excellent retention and quick-link installation. Includes two quick links. Why XT Di2 M8200? This Enduro-focused Di2 drivetrain system brings wireless precision, intelligent gear selection, and rock-solid reliability to every ride. With a wide gear range, rugged construction, and Shimano’s smartest shifting to date, it’s built to meet the demands of modern mountain biking. Specs: Derailleur Cassette Crankset Shifter Chain Works With Derailleur Model: Deore XT M8250 Model ID: RD-M8250-GS (Mid Cage) RD-M8250-SGS (Long Cage) Shift Technology: Wireless Communication Protocol: Di2 Max Tooth: 51t Drive Config: 1x Weight: TBD Cassette Model: Deore XT M8200 Model ID: CS-M8200-12 Gearing: 9-45t, 10-51t Technology: HYPERGLIDE+ Cog Sizes: 9-45t: 9-11-13-15-17-19-21-24-28-33-39-45t 10-51t: 10-12-14-16-18-21-24-28-33-39-45-51t Installation Note: 45t Requires the Shimano TL-LR21 Cassette Tool for installation. Crankset Model: Deore XT M8200 Crank Arm Model ID: FC-M8200 Chainring Model ID: SM-CRM86 Material: Aluminum P.C.D: Direct Chainline: 55mm Q-Factor: 176mm Chainring Teeth: 28t, 30t, 32t, 34t, or 36t Shifter Model: Deore XT M8250 Model ID: SW-M8250-R/IR Shifter Type: Wireless Orientation: Right Clamp: 22.2mm Band Clamp (SW-M8250-R), I-Spec EV (SW-M8250-IR) Chain Model: Deore XT M8100 Model ID: CN-M8100 Type: HG Rear Speeds: 12 Roller Link Plate: Chromizing Pins: Hollow # of links: 126 Weight: 242g Works With The Shimano Deore XT Di2 M8200 Enduro Drivetrain is backwards compatible with your current Shimano 12-Speed cassette, crankset/chainring, and chain. Compatible models include: XTR M9100 and M9200, Deore XT M8100, SLX M7100, and Deore M6100. Medium cage (GS) derailleurs are compatible with 45t cassettes and long cage (SGS) derailleurs are compatible with 51t cassettes.