Fast, reliable shifting can define a mountain bike setup. Shimano XTR M9250 Di2 12spd Drive Train Upgrade Kit brings wireless precision, wide gearing, and durable construction together in one cohesive system. Shimanos latest XTR technology delivers rapid gear changes, dependable protection, and smooth drivetrain control during demanding off-road riding.At the centre of the Shimano XTR M9250 Di2 12spd Drive Train Upgrade Kit sits the XTR M9250 long cage rear derailleur. A wide link structure, skid plate layout, carbon plate, and solid pulley create a strong structure built for longevity. Automatic Impact Recovery returns the derailleur to its original position after a knock, helping riders continue without interruption. A wedge shaped body deflects rocks and reduces direct hits, while SHIMANO SHADOW ES chain stabilisation keeps the drivetrain steady over rough ground.Wireless Di2 technology paired with HYPERGLIDE+ shifting allows quick and precise gear changes across the full 12 speed range. Compatibility with a 10 to 51T cassette provides a wide gearing spread suitable for steep climbs and fast descents.Control comes from the XTR M9250 SHIMANO RAPID ES shifting switch. Familiar ergonomics combine with multi axis adjustability to suit different hand positions and cockpit layouts. Riders can choose between hold down multi shift, tactile double shift, or locked single shift modes for accurate gear selection. A programmable third button allows extra system functions through the Shimano E TUBE app, including additional customisation or third party connectivity.Power for the Shimano XTR M9250 Di2 12spd Drive Train Upgrade Kit comes from the compact BT DN320 battery. Placement inside the rear derailleur protects the unit from impacts and movement while riding. A 305 mAh capacity supports extended ride time between charges while remaining removable for simple recharging.Charging takes place through the EC DN100 charger, a compact solution that keeps the Di2 battery ready for the next ride.Shimano XTR M9250 Di2 12spd Drive Train Upgrade Kit delivers dependable wireless shifting, strong impact protection, and adaptable control for riders who expect consistent drivetrain performance on every ride.Features:- Shimano XTR Di2 Shifter SW-M9250-R- Shimano XTR Di2 Rear Derailleur RD-M9250-SGS - Shimano Di2 battery BT-DN320 - Shimano Di2 Battery Charger EC-DN100

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