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CeramicSpeed Oversized Pulley Wheel (OSPW) System | Shimano 9100/9150 & 8000 SS/8050 SS

Product Description:
The CeramicSpeed Oversized Pulley Wheel System (OSPW) for Shimano 9100/9150 and 8000 SS/8050 SS is engineered for maximum efficiency and performance. Recognized as the fastest pulley system in the world, it reduces drivetrain friction and saves up to 2.4 watts compared to standard Shimano systems. Trusted by professional cycling teams and triathletes, the system features a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel, providing optimal rear derailleur performance and precise chain management.

This updated version includes an integrated stop tower for easier mounting and improved stability. Both pulley wheels are made from high-quality aluminum and can be fitted with standard or Coated CeramicSpeed Bearings for ultra-low friction and long-lasting performance. The system is compatible with cassettes up to 32 teeth for both Dura-Ace and Ultegra derailleurs (11-speed), excluding medium-cage 8000-GS/8050-GS and clutch-equipped RX800/RX805 derailleurs.

With carbon-reinforced cage construction and precision-engineered bearings, the OSPW system ensures smooth, efficient, and durable shifting, making it a must-have upgrade for serious road cyclists.

Features:

  • Proven Energy Savings: Reduces drivetrain friction, saving 2.4 watts over standard Shimano systems.

  • Optimized Pulley Sizes: 13-tooth upper and 19-tooth lower pulley wheels for precise derailleur performance.

  • High-Quality Materials: Aluminum pulley wheels and carbon-reinforced PA cage.

  • Bearing Options: Standard or Coated CeramicSpeed Bearings for ultra-low friction.

  • Integrated Stop Tower: Simplifies mounting and enhances stability.

  • Pulley Oil Included: 15ml dropper bottle for optimal bearing lubrication.

  • Cage Spring Settings: Adjustable to 4 tension levels for fine-tuned performance.

  • Compatibility: Shimano 9100/9150 and 8000 SS/8050 SS, up to 32-tooth cassette, 11-speed.

Technical Specifications:

  • Discipline: Road

  • Speed: 11-speed

  • Pulley Material: Aluminum

  • Pulley Sizes: 13T (upper) / 19T (lower)

  • Cage Material: Carbon-reinforced PA

  • Bearing Type: Standard or Coated CeramicSpeed Bearings

  • Max Cassette Size: 32T

  • Included in Box: Complete OSPW system (13T/19T), 15ml CeramicSpeed Pulley Oil