CeramicSpeed OSPW X Oversized Pulley Wheel System for Shimano RX800/805 – Coated Bearings, Alloy Pulley, Carbon Cage, Silver

$ 619.00
Brand: CeramicSpeed


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.

Product Details:

  • Features a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimization of the rear derailleur
  • Robust cage is custom molded from carbon fiber for durability and light weight
  • The 4 tension spring settings allow for optimal drivetrain setup based on riding conditions
  • OSPW X is specifically designed for road, gravel, and cross riding
  • This OSPW system reduces friction 35-40% over stock pulley configuration
  • Fits 11-36 tooth cassette range


  • Fits Model: Ultegra RX805
  • Largest Cog: 36
  • Fits Brand: Shimano
  • Drivetrain Speeds: 11
  • Fits Model: Ultegra RX800
  • Defined Color: Silver

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Panel Tool
Float header
Float topbar
Default Boxed Large