Shimano Ultegra RD-R8150 Di2 12-Speed Rear Derailleur

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Vendor: Shimano SKU: IRDR8150E


XTR - Rear Derailleur - Medium Cage - SHIMANO SHADOW RD+ - 12-speed

The XTR M9100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.

• Enhance shifting performance
Optimized for new drive system
• Silent drivetrain
Decreased rear derailleur tension at low gear position, to prevent high chain tension at low gear
Add bumper at rear derailleur pulley cage for silent drive
Bigger 13T pulley
• Low profile design
• For more aggressive riding
28 mm better ground clearance (vs. RD-M9100-SGS)
• Low sprocket combination
10-45T (12-speed)

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