CeramicSpeed OSPW Pulley Wheel System for Shimano Dura-Ace 9250/Ultegra 8150 – Coated Races, 3D Printed Ti Pulley, Online

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 13-tooth upper and 19-tooth lower, titanium pulley wheels with Grade 3 Silicon Nitride balls
• Titanium pulley wheels are 3D-printed and hollow for additional weight savings and durability
• Robust cage crafted from polyamide and carbon fiber for durability and light weight
• Coated bearing races increase bearing service life by increasing hardness of race and reducing corrosion
• Compatible with Dura Ace 9200 and Ultegra 8100 series (Fits 11-30 and 11-34 Shimano 12spd Cassette options)
• Four spring tension settings allow customized setup based on ride conditions
• integrated stop tower for simple installation and durability
• CeramicSpeed coated bearings include a lifetime warranty