• Locally reduces drag by an average of 40% compared to stock derailleurs
• Developed in coordination with Drag2Zero
• Refines aerodynamics by focusing on frontal area impact, as well as smoothing and controlling the trailing wind
• 13-tooth upper and 19-tooth lower, aluminum pulley wheels with Grade 3 Silicon Nitride balls
• 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
• CeramicSpeed products with coated bearings include a lifetime warranty

Product Specifics

• Defined Color: Black
• Drivetrain Speeds: 12
• Fits Brand: Shimano
• Fits Model: Dura-Ace R9200 Series
• Fits Model: Ultegra 8100 Series
• Largest Cog: 34
• Shifter/Derailleur Compatibility: Shimano
• keyword search: OSPWS Aero

Today's Stock Status

Currently not available