CeramicSpeed Derailleurs & Parts|Oversized Pulley Wheel System (Black) (Shimano 9000/6700) (Ceramic Bearings)

CeramicSpeed OSPW System Description:

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:

• 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 weight
• Hardened steel bearing races
• Only compatible with Ultegra 6700/6770/6800/6870 mechanical and Di2 rear derailleurs and Dura Ace 7900/7970/9000/9070 mechanical and Di2 rear derailleurs (up to 28t cassettes)
• Not compatible with Shimano Dura-Ace 9100/9150 and Ultegra 8000 series rear derailleurs

Specifications:

• Compatibility: Shimano Dura Ace 7900/7970/9000/9070,Ultegra 6700/6770/6800/6870
• Speeds: 10/11 Speed
• Max Cog:28T
• Color: Black