The absoluteBLACK's HOLLOWcage® for Shimano Dura-Ace 9250 12-speed derailleurs makes the 9250 drivetrain whisper quiet. It features a carbon-polymer mono-plate construction with bespoke oversized full ceramic bearings and one of the most advanced silencing pulleys ever made.
Designed for use with Shimano Dura-Ace 9250 drivetrainsFits up to a 34t cassetteThe Silent Xring Pulley dampens the chain impact on the guide pulley teeth eliminating the engagement noiseIncredibly silent (over 5-7dB noise reduction vs stock)HOLLOWcage uses full ceramic bearings (Silicon Nitride ceramic balls and Zirconia Oxide ceramic races) that make the guide pulleys incredibly stiff for greater shifting precisionOne of the lightest oversized cages on the market (71g)
| Largest Cog |
34 |
| Fits Model |
Dura-Ace 9250 |
| Fits Brand |
Shimano |
| Drivetrain Speeds |
12 |
| Defined Color |
Black, Gray |
