CERAMICSPEED Oversized Pulley DA9100 ULT8000

The CeramicSpeed OSPW System for Shimano 9100/9150 and 8000 SS/8050 SS is the fastest pulley system in the world, offering energy savings of 2.4 watts. This industry-leading product features a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel for optimal rear derailleur performance. The oversized aluminium pulley wheels come with standard or coated CeramicSpeed Bearings. Please note that this system is not compatible with certain Shimano derailleurs. In The Box:

• A complete 13-tooth/19-tooth OSPW System
• CeramicSpeed Bearing Oil in 15ml dropper bottle