Der Part Kogel Pulley Kolossos W/Inner Cage Os 12/19T R9100/R8000 Bk

• Built to offer extremely low friction paired with increased stiffness for loss free shifting
• Long tooth profile on lower pulley offers best possible chain retention
• Lower pulley assembly features a chain catcher to prevent jams
• Can be used dependably on or off road
• Fits SS (short) cage and GS (mid) cage right out of the box
• Oversized 12 and 19 tooth Kogel pulleys
• Compatible with Shimano only

Specifications:

• Model:R9100/R8000
• Speed:
• Max:
• Wrap:
• Cage/Mount:
• Ratio:
• Color:Black
• Wgt:
• Compatibility:
• Swing:
• Fit