Hello and thanks for checking out this listing of a used Shimano XTR RD-M9050 Di2 electronic medium cage rear derailleur. This derailleur was pulled off a pre-owned bike during a component change and will come to you in the very good used condition seen in the included photographs.

PLEASE NOTE: This *ELECTRONIC* Di2 part is *ONLY* compatible with 11-speed Di2 components. It is ONLY COMPATIBLE with E-Tube wires and is INCOMPATIBLE with any earlier Di2 systems. For use with *up to* a 40-tooth rear cog.

Clever clutched design to minimize chain slap on rough terrain.

As with all used parts here at The House of Cogs, this part was treated to a thorough cleaning and detailing using industry-standard solvents and methods. It was thoroughly evaluated using a Di2 testing jig and found to exhibit perfect functionality. It is ready to help you keep your Di2-equipped bike on the road.

Overall condition is a solid 6.5 out of 10 with typical signs of light to moderate wear overall and a few minuscule blemishes from contact during use, travel, and transport, as seen in the pics. That area could be easily touched up with a gray paint pen, I've left it as-is for an honest sale. All springs show smooth and strong performance, pulley wheels are perhaps 20% worn with ample life left. Clutch engages strongly. During testing this RD flew through the gears and held position strongly. Electronic connector/plug interface looks great and all threaded components (mounting bolt, limit screws, pulley bolts) are in fine shape as well.

I took the liberty of performing a function and firmware check using the Shimano E-Tube Project software program and it has the latest firmware loaded. I strongly suggest performing a firmware update after installation to ensure your components can successfully "speak" to one another.

Please see the included pics of the actual part you will receive.