Shimano Ultegra RD-R8150 Di2 12-Speed Rear Derailleur Releases Pure Beam Focusing OpticsThe Pure

Pure Beam Focusing OpticsThe Pure Beam Focusing Optic combines our largest Ultra View Flood Beam with the Bulls-Eye Spot Beam making either up close or downrange illumination highly effective

breathable spandex with synthetic palm Reinforced finger and thumb saddle Wrist pull for easy on and off Ventilated cuff

Twist Buster 2 line twist reduction

for easy self-donning and doffing

Proprietary HangTight™ internal stabilizing and gear-hanging system improves structural integrity and allows for easy 360 degree hanging of headlamps

Shimano Ultegra RD-R8150 Di2 12-Speed Rear Derailleur Releases Pure Beam Focusing OpticsThe PureXTR 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. FEATURES Enhance shifting performance Optimized for new drive system Silent drivetrain