Shimano Derailleurs & Parts|Deore XT Di2 RD-M8250 Rear Derailleur (Black) (12 Speed) (Medium Cage) (GS) (Shadow ES)

Shimano Deore XT Di2 RD-M8250 Rear Derailleur Description:

Shimano Deore XT Di2 RD-M8250 Rear Derailleurs feature a design that offers incredible wireless shifting performance and better clearance over trail obstacles with improved survival odds if an impact unfortunately occurs. The derailleur body incorporate a skid-plate design with a durable aluminum plate that helps deflect strikes, a wide link structure for enhanced drivetrain stability, and a pulley cage that shields solid pulleys to prevent debris from jamming up the moving components. A revolutionary wedge shape adds considerable clearance that helps to avoid and/or deflect impacts, and an integrated RD Protection function instantly returns the derailleur to its original position after impact. Shadow ES chain stabilization is an evolution of the original Shadow chain stabilization system, and has been developed in part to create the lower profile at the leading edge of the derailleur while maintaining strong chain retention and reduced chain slap on the chainstays when hitting rough terrain.

Shimano evolved their Di2 shifting by taking the battery and wiring that used to be housed within the bike’s frame and tucked the battery within a fully encased compartment in the rear derailleur to produce a truly wireless system which can be used on any mountain bike with a derailleur hanger. Lightning quick and very precise shifts happen at the moment the XT Di2 Shift Switches are actuated, with the rear derailleur effortlessly gliding the chain up and down the HYPERGLIDE+ cassettes. Available in two different sizes, enduro riders and anyone looking for the widest gear range possible can expect total trail functionality when pairing the Long Cage SGS version with 10-51T cassettes; weight-conscious XC racers and those looking for the maximum ground clearance can combine the Mid Cage GS offering with a 9-45T cassette to achieve a lighter-weight compact drive while still maintaining a robust, 500% effective gear range.

Note: Rear derailleur does not include the XT Di2 Battery.

Features:

• Wireless electronic derailleurs for tackling everything from XC MTB racing and everyday trail riding to blitzing technical enduro courses
• Robust skid-plate design with a wide link structure incorporates a durable aluminum plate and solid pulley for outstanding reliability and longevity
• Shielding pulley cage design prevents trail debris from jamming up and potentially stopping the moving pulley and chain
• RD Protection Function returns the derailleur to its original position after an impact
• Shadow ES evolves chain stabilization with a slimmer, stronger iteration
• Wedge Shape adds an additional 23mm of ground clearance and deflects impacts from rocks or trail debris
• Mid-Cage GS option optimizes the use of a smaller chainring with a 9-45T cassette for a lighter and more compact drivetrain configuration that adds even more clearance
• Battery tucks safely within an enclosed space for total security and is easily removed when it is time to be recharged

Specifications:

• Speed: 12 Speed
• Shifter Compatibility: Shimano Di2
• Shift Mechanism: Electronic (Wireless)
• Max. Tooth: 45T (GS) | 51T (SGS)
• Min. Tooth: 9T (GS) | 10T (SGS)
• Chain Wrap Capacity: 36T (GS) | 41T (SGS)
• Cage Material: Aluminum
• Chain Retention: Shadow ES
• Color: Black
• Weight: –