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Shimano Ultegra Di2 RD RX805 Shadow + Plus Rear Derailleur 11 Speed GS Medium Cage. With the diversification of road cycling and the growth of gravel and multi-surface riding, Shimano introduces Ultegra RX, rear clutch derailleurs that further the versatility of the Ultegra R8000 drivetrain

Chain Stabilizer mechanism adopted from mountain bike design adapted and tuned for road drivetrains and riding conditions
ON/OFF switch (clutch)
Precise accurate shifting
Compatible with current road DUAL CONTROL Di2 LEVER
Shimano Shadow RD Plus technology
Mount: Direct attachment (conventional)
Speeds: 11
Max. front difference: 16T
Total Capacity: 39T
Low Sprocket Min/Max: 28T/34T
Top Sprocket Min/Max: 11T/11T
Firmware update by E-TUBE Project
E-TUBE port: 1
Color: Black

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