GIM Oversized Pulley Wheel System (OSPW) Compatibility:SHIMANO Ultegra (R8000) Its special design facilitates the

Its special design facilitates the insertion of the bottle and keeps it firmly in place until the next drink

FEATURES: Low sigma transitions / Dynamic Race

Rider tuned gearing options with 11-speed

Directional 11-speed chain

GIM Oversized Pulley Wheel System (OSPW) Compatibility:SHIMANO Ultegra (R8000) Its special design facilitates theGEARS IN MOTION (GIM) OSPW for SHIMANO Ultegra R8000 SHIMANO 105 R7000 Series The Oversized Pulley Wheel System for SHIMANO Ultegra R8000 SHIMANO 105 R7000 Series is designed to save you watts by reducing drag within your road bike drivetrain system. Oversized Pulley Wheels has been proven to increase cycling efficiency through the implementation of oversized pulley wheels (increase in chain bending angle) with buttery smooth ceramic bearings. The