CERAMICSPEED Oversized Pulley DA9100 ULT8000

The 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. Not compatible with Ultegra 8000-GS or 8050-GS derailleurs, or Ultegra RD RX800 & RX805. Check out OSPW X for Shimano RX800/805 for a compatible version. Compatible with up to a 32 tooth cassette for Dura Ace & Ultegra derailleurs. In The Box

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