Debate the cost:performance ratio of oversized ceramic bearing pulley upgrades all you want, but there’s no denying that the absoluteBLACK HOLLOWcage is unique, and now it’s available for SRAM eTap AXS derailleurs too, with even greater noise reduction this time around. AbsoluteBLACK says their derailleur pulley upgrade solution is lighter, more aero, lower-friction, AND quieter than stock derailleur cages or other aftermarket upgrades.

What’s not to like?

absoluteBLACK 1-sided HOLLOWcage SRAM derailleur upgrade

 

absoluteBLACK HOLLOWcage SRAM AXS aero hollow ceramic derailleur pulley upgrade, rainbow angled

all photos c. absoluteBLACK

There are tons of options to upgrade your derailleur with ceramic bearings or an oversized pulley wheel system to lower the friction in your drivetrain. But only one features an aero-dimpled, one-sided cage designed to flex and a ceramic bearing pulley you can stick your finger through…

AbsoluteBLACK promises faster shifting, silent-running, improved aerodynamics, and the smoothest-rolling low-friction ceramic bearings on the market – all with HOLLOWcage now for your wireless SRAM eTap AXS Red & Force derailleurs.

Tech details – What’s new?

Absolute Black carbon-ceramic Hollow Cage low friction upgrade, angled details

Just like the original Shimano-compatible version, the new absoluteBLACK HOLLOWcage SRAM AXS gets the same dimpled carbon-reinforced single plate cage design that curves from the outside of the upper pulley at the derailleur to the inboard-side of the hollow lower pulley.

absoluteBLACK HOLLOWcage SRAM AXS aero hollow ceramic derailleur pulley upgrade, front

AbsoluteBLACK claims the more flexible design (than a conventional 2-plate layout) actually lowers drivetrain friction, while the upper pulley remains perfectly positioned for precise shifts.

absoluteBLACK HOLLOWcage SRAM AXS aero hollow ceramic derailleur pulley upgrade, back

The unique 69g cage spins carbon polymer pulleys – 12T upper & 18T lower – on ceramic bearings.

The closed upper SRAM flat-top-chain compatible pulley gets an updated profile but still includes a “Silent Xring Pulley” rubber damper to quiet drivetrain noise. AbsoluteBLACK says the decrease in noise is even more apparent here, especially over the louder Force AXS drivetrain.

absoluteBLACK HOLLOWcage SRAM AXS aero hollow ceramic derailleur pulley upgrade, Silent Xring rubber damper

They also claim the taller than conventional upper pulley teeth also enable lower spring tension without compromising shift precision, for lower overall drivetrain friction.

absoluteBLACK HOLLOWcage SRAM – Pricing & options

absoluteBLACK HOLLOWcage SRAM AXS aero hollow ceramic derailleur pulley upgrade, SRAM Red eTap AXS

Curiously, the HOLLOWcage version compatible with either SRAM Red eTap AXS or Force eTap AXS is actually 17% cheaper than for Shimano derailleurs. It also works for larger cassettes – up to 10-36T (but not compatible with XPLR derailleurs).

absoluteBLACK HOLLOWcage SRAM AXS aero hollow ceramic derailleur pulley upgrade, colors

Pick up an absoluteBLACK HOLLOWcage SRAM AXS for $579 / 499€ / £429 now, available now in limited numbers with black, gold, red, titanium silver & PVD rainbow hollow lower pulleys.

AbsoluteBlack.cc

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19 Comments
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Marsel
Marsel
4 months ago

Hello, Hambini fans!

Tim
Tim
4 months ago
Reply to  Marsel

Beat me to it.

Fred
Fred
4 months ago
Reply to  Marsel

Is the pen working?

Collin S
Collin S
4 months ago
Reply to  Fred

THE PEN IS WORKING

Steve
Steve
4 months ago
Reply to  Marsel

Hi everyone, and welcome.

Rage
Rage
4 months ago
Reply to  Marsel

Came here for this, didn’t disappoint

Joenomad
Joenomad
4 months ago

What’s not to like? How about the price for minimal if any actual gains. But hey, if you got money burning a hole in your pocket, go for it.

Dirk
Dirk
4 months ago
Reply to  Joenomad

No advantage like all these pulley cages. Worse shifting and hardly any gain. However, people still use lubes that have more loss then any gain you find elsewhere 🙂

David
David
4 months ago

“Looks wild” is the only bling that you get for your big bucks here. All other features are pure fiction, while “less friction” is plain lying in your face.

Astro_Kraken
Astro_Kraken
4 months ago

These are a pointless waste of money but golly they look neat.

dg velo
dg velo
4 months ago

Why does it look like a dog chewed on that Factor chain stay?

FritzP
FritzP
4 months ago

I guess the sales numbers justify the development cost, production & support of these dubiously beneficial products.

Freddy
Freddy
4 months ago
Reply to  FritzP

do you mean marketing costs?

Tim
Tim
4 months ago

When the price is 600 bucks and the product is made of plastic, you only need to find a few idiots to buy them to make a profit.

Jason Etter
Jason Etter
4 months ago

Looks cool!

Jason
Jason
4 months ago

All figures no doubt validated by an unknown professor at an unnamed Portuguese university. Oh please. AND HELLO HAMBINI FANS!!!

Hexsense
Hexsense
4 months ago

Please stop calling this an upgrade.
It’s not.
Heavier, worse shifting, less aero, and it tells everyone you fell for marketing and have more money than sense.

Jon
Jon
4 months ago

I just showed up for the comments

Mar
Mar
4 months ago

Am I a dentist or what?