CeramicSpeed OSPW Pulley Wheel System Shimano 9000/6800 Series - Alloy Pulley Carbon Cage BLK MFPN=SOLO-XD-18T-1 The unique design is compatible

The unique design is compatible with aero and round seatposts

Shimano Alfine S501 Chainring Guard

Lastly a new bleeding process makes maintenance easier than ever

12-13-14-15-16-17-18-19-21-23-25 Cassette Body Type Shimano HG 11/12-Speed Road Drivetrain Speeds 11 Color Silver Weight 232

CeramicSpeed OSPW Pulley Wheel System Shimano 9000/6800 Series - Alloy Pulley Carbon Cage BLK MFPN=SOLO-XD-18T-1 The unique design is compatibleCeramicSpeed OSPW Pulley Wheel System for Shimano 9000 6800 Series Alloy Pulley Carbon Cage Black. The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low friction bearings and unique overall design. Features two oversized 17 tooth aluminum pulley wheels with Grade 3 Silicon Nitride balls Robust cage crafted from polyamide and carbon fiber for durability and light