Detail Information

The New Era of Silent Oversized Derailleur Pulley Cages is Here.
Meet Carbon - Ceramic HOLLOWcage

For nearly seven decades, rear derailleur cage has not really changed much. Same old fashioned two-plate construction with very small bearings in the middle of the plastic pulleys, held together by two bolts.

HOLLOWcage changes everything. Our revolutionary mono-plate design is the quietest, best shifting, aerodynamic cage design created to date.  It is a dawn of new era for rear derailleurs.

Our HOLLOWcage has a carbon-polymer mono-plate construction with bespoke, oversized, full ceramic bearings and the most advanced silencing pulleys ever created.

It is offered in 5 different lower lockring color options: black, gold, red, titanium and pvd rainbow. The upper lockring and cage color is black only. 

HOLLOWcage for eTap AXS Red & Force 12spd derailleurs. Our revolutionary mono-plate OSPW is the quietest and best shifting oversized derailleur cage design created to date for eTap AXS. Your eTap drivetrain will finally become silent. HOLLOWcage OSPW has a carbon-polymer mono-plate construction with bespoke, oversized, full ceramic bearings and the most advanced silencing pulleys ever created.

WHY IS OUR HOLLOWCAGE SO SPECIAL?
Sram eTap AXS  is known to be louder than other drivetrains. Our  HOLLOWcage with patent pending Silent Xring Pulley  completely eliminates this problem allowing you to finally enjoy the ride.

Weight: 69g
Colour: Lower lockring Black, Titanium, Red, Gold & PVD Rainbow
Compatibility: Sram Red & Force eTap AXS Road 12sp  . Fits up to 36T cassette.  Not suitable for XLPR derailleurs.
Materials used: Carbon fiber-polymer matrix, 7075 Aluminium, rubber, ceramics
In the box: Complete cage, lockring tool, 2x spare xring rubbers.