DER PART KOGEL PULLEY KOLOSSOS w/INNER CAGE OS 12/19T R9100/R8000 RD

Description

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