Shimano Dura-Ace 9100/ Ultegra 8000 Absolute Black Clevis

Absolute Black Shimano Dura Ace 9100 and Ultegra 8000 11-speed derailleur cage

The Absolute Black Hollowcage Shimano Dura-Ace 9100 and Ultegra 8000 derailleur cage represents a significant step forward, based on a unique OSPW type hanger. The latter offers exceptionally quiet, precise and aerodynamic operation. Transform your derailleur experience with the OSPW Hollowcage, built around a carbon polymer carrier and equipped with oversized ceramic bearings, as well as the most advanced pulleys currently available.

Strong points :

• High-end ceramic pebbles
• Oversized derailleur cage
• OSPW in ultralight carbon (only 75 grams)
• Aerodynamic golf ball texture
• Quietest screed in the world

Features :

• Materials: Carbon polymer matrix, 7075 aluminum, ceramic and rubber
• Derailleur compatibility: Shimano Dura Ace 9100 / 9150 / 9170, Ultegra 8000 / 8050
• Cassette compatibility: 11 speeds, up to 32 teeth max
• Developed in England and manufactured in Europe
• Available colors: PVD Rainbow, Black, Titanium, Red and Gold
• Verified weight: 75 grams

Advantages of the Hollowcage OSPW screed:

• Ultra-quiet operation (over 12 dB noise reduction compared to original systems)
• Improved aerodynamics compared to stock treads and oversize treads
• Significant energy savings compared to original systems
• One of the lightest screeds/rollers on the market
• Shifts as precise and fast as original
• First single screed type system
• New era of silent transmission thanks to XRING rollers

Polymer pulleys offer significant noise reduction compared to aluminum models, thanks to patented XRING rubber technology that dampens chain shock, eliminating unwanted noise.

The flexibility of the OSPW clevis improves efficiency, allowing the bottom roller to better align when using the cassette's high speeds. This reduces friction, thereby optimizing performance.

The Hollowcage clevis offers a stiffer upper guide roller for more precise transmission, based on ultra-rigid oversized ceramic bearings.

The higher tooth profile of the Hollowcage clevis ensures optimal guidance and increased precision when changing gears.

Contrary to popular belief, the oversized Hollowcage is more aerodynamic, as demonstrated by specific tests carried out in a wind tunnel.

Restitution of Watts:

Four main components minimize power loss, with oversized ceramic bearings, optimized tooth count, adjusted clevis tension spring, and lower components dynamically aligned with chain angle.

The Hollowcage clevis requires a spring setting at the lowest setting for optimal installation, providing high quality and precision gear changes. The instructional video guides installation, and the 4-year bearing warranty ensures product durability.