HOLLOWcage® for eTap AXS Red & Force 12spd derailleurs finally makes your AXS drivetrain whisper quiet. Our revolutionary mono-plate oversized pulley wheel (in short OSPW) is the quietest and best shifting oversized derailleur cage for eTap AXS created to date. HOLLOWcage ® OSPW has a carbon-polymer mono-plate construction with bespoke, oversized, full ceramic bearings and the most advanced silencing pulleys ever made.

Sram eTap AXS is known to be louder than other drivetrains. Our HOLLOWcage® with Silent " Xring Pulley™ " completely eliminates this problem allowing you to enjoy the ride.

Weight(+/-1g): 69g
Size: 12/18T
Colour: Lower lockring: PVD Rainbow, Black, Titanium, Red, Gold ; Upper lockring: Black
Compatibility: Sram eTap AXS Red (2022 & new 2024) & Force & Rival 12spd derailleurs. Works with 10-26T, 10-28T & 10-33T & 10-36T cassettes (check chain length calculation at the bottom). Not compatible with Sram XPLR and 11spd Red / Force. Works ONLY with AXS Flat Top chain. Do NOT mount any other chain.
Materials used: Carbon fiber-polymer matrix, 7075 Aluminium, rubber, ceramics.
In the box: Complete cage, lockring tool, special tool.

How to mount HOLLOWcage® for eTap AXS Red & Force 12spd derailleurs , please refer to the following video and dowload the installation instructions PDF.  Works ONLY with AXS Flat Top chain. Do NOT mount any other chain.  The upper pulley teeth have been optimised to work with this chain only.

Designed in England. Manufactured in EU. The World's best oversized derailleur pulley cage

HOLLOWcage® is a registered mark of absoluteBLACK. "Xring pulley™ " is a trademark of absoluteBLACK. Mono plate cage construction, as well as our special silencing pulley is protected by US and EU patents and pat. pend. applications US11661144, EP3915864, EP4234383A1, EP4234981A1, EP4183671A1, EP4119430A1, EP4119433A1, EP4119431A1. #HOLLOWcage, #ospw, #oversizedpulley