TCRCAGEU81 derailleur cage

Absolute Black Hollowcage cage for Shimano Ultegra 8100 12 speed derailleur

This is the Absolute Black Shimano 8100 cage . It's the dawn of a new era for rear derailleurs. The OSPW Hollowcage derailleur cage has a single-plate carbon-polymer construction with oversized ceramic bearings and the quietest pulleys ever.

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 :

• HOLLOWcage has a single-plate carbon polymer construction with custom oversized full-ceramic bearings and muffler pulleys.
• Special xring rubber slings cushion the impact of the chain on the tensioner teeth, eliminating engagement noise.
• The single disc cage can dynamically adapt to the chain angle, allowing the cage (and therefore the lower pulley) to better align.
• Adjustable spring tension allows you to adjust cassette size and chain length to find the lowest tension possible.
• Box includes: Complete cage, locking ring tool, 2 spare rubber rings.
• Compatible with Shimano Ultegra 8100/8150/8170 12 speed. Fits cassettes up to 34D.
• 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.